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RE: Tools for managing filer content
by George, Andrew 08 Apr '07

08 Apr '07

For cifs my favorite when I looked at it was filecensus Not cheap though -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of jbrigman(a)nc.rr.com Sent: Saturday, 7 April 2007 7:34 AM To: toasters(a)mathworks.com Subject: Tools for managing filer content Hey Toasterz; Are there any free software tools which might run on a filer's server host (whether Linux or Windoze) for managing content on a filer? I'm looking for something I can run, preferably as a cron job or a scheduled job. I'm envisioning something that will let me configure a "control file" list of names of files to look for on the filer, then the program would walk the shares and exports and tell me how much space is being taken up on the filer by each file type. Even just a perl script would be great. I do have a windows app called Treesize Pro (which is not free) I use to get a snapshot of occupancy of various CIFS shares. It's useful and is the best thing I've got at the moment. But I'd like to have something I could script to send out a report summary providing both the overall occupancy of a volume plus a breakdown of what's in the volume. JKB "This e-mail and any attachments to it (the "Communication") is, unless otherwise stated, confidential, may contain copyright material and is for the use only of the intended recipient. If you receive the Communication in error, please notify the sender immediately by return e-mail, delete the Communication and the return e-mail, and do not read, copy, retransmit or otherwise deal with it. Any views expressed in the Communication are those of the individual sender only, unless expressly stated to be those of Australia and New Zealand Banking Group Limited ABN 11 005 357 522, or any of its related entities including ANZ National Bank Limited (together "ANZ"). ANZ does not accept liability in connection with the integrity of or errors in the Communication, computer virus, data corruption, interference or delay arising from or in respect of the Communication."

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Re: Weird NFS need
by Max Reid 08 Apr '07

08 Apr '07

> You need something redhats GFS > Which I believe requires the clients to be able to communicate in some > form over tcp to allow "fencing" to work...software that controls multiple > client access. Most clustered FS's do require SNMP access to the fabric in order to conduct fencing. Is SNMP more secure than NFS? Regards, Max > > The may be other too like STORnext from ADIC. > > Sent from my Verizon Wireless BlackBerry > > -----Original Message----- > From: "Glenn Dekhayser" <gdekhayser(a)voyantinc.com> > Date: Fri, 6 Apr 2007 14:55:22 > To:<toasters(a)mathworks.com> > Subject: Weird NFS need > > So I figured I'd give the group a shot at this. > > I've got a client that wants to have 2 linux-based ftp/http servers, one > in the LAN and one in the DMZ, share some data. NFS would be perfect. > > However- > > The security group will not allow server in the DMZ to access the > LAN-based Netapp through the firewall for its NFS resource. Also, I > cannot put an interface from the Netapp into the DMZ. > > They WILL allow it if it's encrypted. > > I saw WebNFS, does Netapp support some sort of NFS over HTTPS? or SSH? > > > Alternatively, the client said that what would be allowed is if the two > servers could share the same LUN- FC only, no iSCSI. Has anyone out > there tried that before, what needs to be done on the linux side to make > that happen? > > Thanks > > Glenn (the other one) >

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Re: Weird NFS need
by Max Reid 07 Apr '07

07 Apr '07

> So I figured I'd give the group a shot at this. > > I've got a client that wants to have 2 linux-based ftp/http servers, one > in the LAN and one in the DMZ, share some data. NFS would be perfect. > > However- > > The security group will not allow server in the DMZ to access the > LAN-based Netapp through the firewall for its NFS resource. Also, I > cannot put an interface from the Netapp into the DMZ. > > They WILL allow it if it's encrypted. > > I saw WebNFS, does Netapp support some sort of NFS over HTTPS? or SSH? ONTAP supports IPSEC. That should work, but it will increase the CPU load on the filer. I don't think it's an issue for HTTP/FTP setups, but it might cause problems with heavy PPS environments. What I don't understand is if the data their sending is basically unencrypted (HTTP and FTP?!??!) why does the NFS component need to be super secure from "teh hax0rz."? Regards, Max > > > Alternatively, the client said that what would be allowed is if the two > servers could share the same LUN- FC only, no iSCSI. Has anyone out > there tried that before, what needs to be done on the linux side to make > that happen? > > Thanks > > Glenn (the other one) >

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Tools for managing filer content
by jbrigman＠nc.rr.com 06 Apr '07

06 Apr '07

Hey Toasterz; Are there any free software tools which might run on a filer's server host (whether Linux or Windoze) for managing content on a filer? I'm looking for something I can run, preferably as a cron job or a scheduled job. I'm envisioning something that will let me configure a "control file" list of names of files to look for on the filer, then the program would walk the shares and exports and tell me how much space is being taken up on the filer by each file type. Even just a perl script would be great. I do have a windows app called Treesize Pro (which is not free) I use to get a snapshot of occupancy of various CIFS shares. It's useful and is the best thing I've got at the moment. But I'd like to have something I could script to send out a report summary providing both the overall occupancy of a volume plus a breakdown of what's in the volume. JKB

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Re: sizing files and folders on a filer
by John Foley 05 Apr '07

05 Apr '07

All - thanks for the replies. The java method was the most interesting, but I couldn't get it to work consistently - some directories it would work on, but others it would claim that the directory didn't exist. I tried a few things, but could never get it to be reliable, so I punted on that. Nice to know about it, though ! For the record, I will probably end up using a VB script from Windows to accomplish what I need to do, since in our environment the Windows client can get to everything I need to get to, and I there are several that are on Gb networking, so the sizing will be faster. Thanks, John Matti Ryymin wrote: > Hi John, > > You can find du command in java shell; > On console type java netapp.cmds.jsh > in the shell you can use du command. > You'll exit from shell with exit command. > > regards, > > Matti Stephen C. Losen wrote: > > 4K and there are no fragments, so a file consumes disk space in 4K > increments. > > I would use Unix: du -k > > Not that I know of. > > One interesting bit of WAFL trivia -- if a file has <= 64 bytes of data > then it consumes 0 blocks because the file data is stored in the inode. > > Steve Losen scl(a)virginia.edu phone: 434-924-0640 > > University of Virginia ITC Unix Support > > > > -----Original Message----- > From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On > Behalf Of John Foley > Sent: 4. huhtikuuta 2007 19:07 > To: toasters(a)mathworks.com > Subject: sizing files and folders on a filer > > I am looking for the "best" way to size certain folders and files on a > NetApp filer. I get different numbers depending on whether I use Windows > (2000) or Unix (Solaris 9). (I am "root" in both cases, and thus able to see > all the files in a folder,etc). I am wondering if this is due to different > block sizes used by those OSes - Windows uses 4K, and Solaris 512K, I think > (!) > > So, my questions are : > 1) what is WAFL's block size ? > 2) what do you recommend for sizing folder and files that reside on the > filer, but are not themselves qtrees (so the quota report won't work) ? > 3) is there a "du" command on the filer itself that I"m missing ? > > Thanks, > > John > -- ------------------------------------------------------------------------------ John Foley < johnf(a)comm.mot.com > sent from Windows using Thunderbird

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If not NetApp, then who ?
by Paul Letta 05 Apr '07

05 Apr '07

Hi Everyone, We are a long time NetApp shop here. We started with the 540 and have upgraded multiple times and are now at FAS940's. The time has come for us to upgrade again. We have been extremely happy with NetApp. The reliability, uptime, support, features, etc. have spoiled us for years. What I want to ask the community now is: has anyone else appeared on the stage that you are as happy with ? There are a lot of products that claim to have snapshots, NFS/CIFS, etc. But how reliable are they ? Has anyone that has been really happy with NetApps moved to any of the newer players and been as happy ? My motivation looking elsewhere is, of course, price. I admit, I have been slightly bitten by the cheap SATA file servers bug. Our current config is with all FC drives, but if you have enough disks, SATA seems to be close to the performance. Does anyone have any suggestions as to what NetApp's real competitors are ? Anyone have any stories to share with me about trying someone else (cheaper) ? Thanks, Paul Letta

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sizing files and folders on a filer
by John Foley 04 Apr '07

04 Apr '07

I am looking for the "best" way to size certain folders and files on a NetApp filer. I get different numbers depending on whether I use Windows (2000) or Unix (Solaris 9). (I am "root" in both cases, and thus able to see all the files in a folder,etc). I am wondering if this is due to different block sizes used by those OSes - Windows uses 4K, and Solaris 512K, I think (!) So, my questions are : 1) what is WAFL's block size ? 2) what do you recommend for sizing folder and files that reside on the filer, but are not themselves qtrees (so the quota report won't work) ? 3) is there a "du" command on the filer itself that I"m missing ? Thanks, John -- ------------------------------------------------------------------------------ John Foley < johnf(a)comm.mot.com > sent from Windows using Thunderbird

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Re: Can one change the number of disks in a raid group on the fly
by Brent Ellis 04 Apr '07

04 Apr '07

Thanks for all the responses to this, I figured as much, but I was kinda hoping. Ultimately, it is not a big deal we will be growing this anyway, I just needed a little more space to allocate to a lun. Brent Ellis Computing Services Group Boston University On Apr 3, 2007, at 5:02 PM, Nollman, Bill wrote: > Brent, once the disks have been assigned to a RG they can't be > removed. > You can later grow the RG size and add more disks or even out the > RG's, > but you can't pull any out. > > Bill > > From: Brent Ellis [mailto:interi@bu.edu] > Sent: Tuesday, April 03, 2007 4:11 PM > To: toasters(a)mathworks.com > Subject: Re: Can one change the number of disks in a raid group on > the fly > > More backstory, I made a mistake when I was trying grow my > aggregate and I am seeing if I can change it. > > Essentially I have two shelves attached to a fas3020c filer. I had > a aggregate(aggr0) which was set to 14 disks per raid group with 1 > raid group using the disks from the 1st shelf. and then I have 4 > disks in the second shelf. I wanted to temporarily increase the > size of my aggregate so I increased the size and I expanded aggr0 > onto the disks from the second shelf. But then I realized I didn't > change the raid group size. so now I have 1 raid group with 14 > disks using raid_dp and a second group with 3 disks using raid_dp > and a spare. That means for the second raid group I have only > added a total of 1 disk of space while using 3 drives. It seems > like a waste so I wanted to see if I could safely backtrack or if I > have to stick with it and just fill out the rest of the shelf at > some point. > > -Brent > > > > On Apr 3, 2007, at 3:54 PM, Nollman, Bill wrote: > >> Brent; >> >> Of course you can ! >> >> From FilerView - Go to Aggregates / Manage / Click on the >> aggregate to modify / Click Modify / Next >> You should see "RAID Group Size" and the current number of disks >> per RG. >> Change it from the drop down. For FC disk this can be up to 28. >> For SATA up to 16 (with RAID-DP). >> >> Keep in mind that larger RG's will mean longer reconstruct time >> when you lose a disk. >> >> And Adam's note about back filling is correct as well....but only >> need to worry about that with more than 2 RG's. >> >> Bill Nollman >> NetApp SE - Hartford, CT. >> Cell: (860)-212-9466 >> >> >> From: Brent Ellis [mailto:interi@bu.edu] >> Sent: Tuesday, April 03, 2007 2:51 PM >> To: toasters(a)mathworks.com >> Subject: Can one change the number of disks in a raid group on the >> fly >> >> Question about resizing raid groups. Can one change the number of >> disks in a raid group on the fly in a netapp filer? I currently >> have an aggregate with a single raid groups and I would like to >> add another shelf. So as to reduce the amount of storage I lose >> can I change the size of the raid group and grow the underlying >> raid for the aggregate or do I have to start a new raid group? >> >> Brent Ellis >> Computing Services Group >> Boston University >> >> >> >

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RE: If not NetApp, then who ?
by Paul Keating 04 Apr '07

04 Apr '07

You can still put 3Par arrays behind NetApp filers, though. ;o) -- > -----Original Message----- > From: owner-toasters(a)mathworks.com > [mailto:owner-toasters@mathworks.com] On Behalf Of Wes Hardin > Sent: April 3, 2007 4:32 PM > To: max.reid(a)saikonetworks.com > Cc: letta(a)jlab.org; toasters(a)mathworks.com > Subject: Re: If not NetApp, then who ? > > > Plus they were fast, but that could > have been partly due > to the 3PAR array we had as the backend. ==================================================================================== La version française suit le texte anglais. ------------------------------------------------------------------------------------ This email may contain privileged and/or confidential information, and the Bank of Canada does not waive any related rights. Any distribution, use, or copying of this email or the information it contains by other than the intended recipient is unauthorized. If you received this email in error please delete it immediately from your system and notify the sender promptly by email that you have done so. ------------------------------------------------------------------------------------ Le présent courriel peut contenir de l'information privilégiée ou confidentielle. La Banque du Canada ne renonce pas aux droits qui s'y rapportent. Toute diffusion, utilisation ou copie de ce courriel ou des renseignements qu'il contient par une personne autre que le ou les destinataires désignés est interdite. Si vous recevez ce courriel par erreur, veuillez le supprimer immédiatement et envoyer sans délai à l'expéditeur un message électronique pour l'aviser que vous avez éliminé de votre ordinateur toute copie du courriel reçu.

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iscsi vifs
by Darish Rajanayagam 04 Apr '07

04 Apr '07

Greetings: Currently, my ISCSI setup consist of a single mode vif on the NetApp side - this connects to a dedicated switch for the ISCSI traffic. I have active/passive clusters connected to this switch with dedicated NICs for ISCSI connectivity. On the server side, I run Snap Drive 4.1 and MS ISCSI Initiator. I would like to change this to the following. 1. Create two multimode vifs (each vif connecting to a separate switch - the switches would then be bridged) 2. Create a second level single mode vif consisting of the above two multimode VIFs - so only one vif is active at any one time. 3. The second level single mode vif will have the same IP address as it is now. If I make the above change, would this affect any of the currently mapped ISCSI connections? Do I need to re-map it through MS ISCSI initiator - IP addresses are not changing, would this cause any changes on the server side? Thanks, Darish.

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Re: Can one change the number of disks in a raid group on the fly
by Brent Ellis 03 Apr '07

03 Apr '07

More backstory, I made a mistake when I was trying grow my aggregate and I am seeing if I can change it. Essentially I have two shelves attached to a fas3020c filer. I had a aggregate(aggr0) which was set to 14 disks per raid group with 1 raid group using the disks from the 1st shelf. and then I have 4 disks in the second shelf. I wanted to temporarily increase the size of my aggregate so I increased the size and I expanded aggr0 onto the disks from the second shelf. But then I realized I didn't change the raid group size. so now I have 1 raid group with 14 disks using raid_dp and a second group with 3 disks using raid_dp and a spare. That means for the second raid group I have only added a total of 1 disk of space while using 3 drives. It seems like a waste so I wanted to see if I could safely backtrack or if I have to stick with it and just fill out the rest of the shelf at some point. -Brent On Apr 3, 2007, at 3:54 PM, Nollman, Bill wrote: > Brent; > > Of course you can ! > > From FilerView - Go to Aggregates / Manage / Click on the aggregate > to modify / Click Modify / Next > You should see "RAID Group Size" and the current number of disks > per RG. > Change it from the drop down. For FC disk this can be up to 28. For > SATA up to 16 (with RAID-DP). > > Keep in mind that larger RG's will mean longer reconstruct time > when you lose a disk. > > And Adam's note about back filling is correct as well....but only > need to worry about that with more than 2 RG's. > > Bill Nollman > NetApp SE - Hartford, CT. > Cell: (860)-212-9466 > > > From: Brent Ellis [mailto:interi@bu.edu] > Sent: Tuesday, April 03, 2007 2:51 PM > To: toasters(a)mathworks.com > Subject: Can one change the number of disks in a raid group on the fly > > Question about resizing raid groups. Can one change the number of > disks in a raid group on the fly in a netapp filer? I currently > have an aggregate with a single raid groups and I would like to add > another shelf. So as to reduce the amount of storage I lose can I > change the size of the raid group and grow the underlying raid for > the aggregate or do I have to start a new raid group? > > Brent Ellis > Computing Services Group > Boston University > > >

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Snapmirror NTAP is at 20% constantly
by Steven Mandrake 03 Apr '07

03 Apr '07

Hi Guys, Any reason why CPU utilization on my snapmirror destination is always at 20%??? My production filer is much less than that. The Snapmirror only happens once per day. All other indicators seem idle. Here is a sample output: CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape kB/s Cache in out read write read write age 22% 0 0 0 1 1 65 59 0 0 4 20% 0 0 0 1 0 121 120 0 0 4 26% 0 0 0 1 1 336 59 0 0 3 22% 0 0 0 1 1 2017 472 0 0 3 23% 0 0 0 1 0 2461 413 0 0 3 22% 0 0 0 1 0 2334 182 0 0 3 24% 0 0 0 1 1 1307 206 0 0 3 20% 0 0 0 1 1 61 59 0 0 3 22% 0 0 0 1 0 123 118 0 0 3 Another question -- Is there a way I can monitor utilization/performance of NVRAM and Memory? What other perf commands can I use other than sysstat? Thanks

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Can one change the number of disks in a raid group on the fly
by Brent Ellis 03 Apr '07

03 Apr '07

Question about resizing raid groups. Can one change the number of disks in a raid group on the fly in a netapp filer? I currently have an aggregate with a single raid groups and I would like to add another shelf. So as to reduce the amount of storage I lose can I change the size of the raid group and grow the underlying raid for the aggregate or do I have to start a new raid group? Brent Ellis Computing Services Group Boston University

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RE: CIFS overhead with Netapp Filers
by Ganjihal, Chetan 03 Apr '07

03 Apr '07

I think it would be important to know the state of the system(filer), the values set for different options, system utilization etc. If there is a perfstat output with stats gathered during the operation(file copy) being carried out, it will help understand the problem. cheers Chetan ________________________________ From: Shane Garoutte [mailto:sgaroutte@gmail.com] Sent: Thursday, March 29, 2007 12:59 AM To: Langdon, Laughlin T. ((Lock)) Cc: Glenn Walker; toasters(a)mathworks.com Subject: Re: CIFS overhead with Netapp Filers A quick crawl on NOW provided the following: http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs675 if CIFS performance is slow after investigating performance issues, modify the filer's CIFS negotiated buffer size. 1. Verify that hardware or software problems do not exist within the filer, network and client. 2. Record the CIFS negotiated buffer size by capturing the output of the filer command: options cifs.neg_buf_size 3. Enter the following filer commands: a. cifs terminate b. options cifs.neg_buf_size 16644 c. cifs restart 4. If the buffer size in step 3b does not improve performance, try the following buffer sizes: a. Use '17424'. Note: Starting with Data ONTAP 6.0.X, allow the buffer size to exceed 17424; therefore, upgrade to a release that fixes bug 33396 only if performance does not improve. b. Use '33472' for environments mixed with Windows NT and Windows 2000. c. Use '65340' for Windows 2000 only environments. 5. If performance remains slow: a. Re-confirm that hardware or software problems do not exist within the filer, network and client. b. Restore the original CIFS negotiated buffer size (refer to steps 2 and 3). c. During a performance interruption, capture a packet trace between the filer and Windows client. d. Send the packet trace to Network Appliance Technical Support for analysis. On Mar 28, 2007, at 8:33 AM, Langdon, Laughlin T. ((Lock)) wrote: I'm doing a straight drag and drop using UNC paths with a single 1.5gig zip file and a 2.2Gig binary File. If I add more streams (aka start more than one copy on more than one server the filer happily provides more bandwidth) From Windows server to windows server I get 500 Mbps From Windows server to a Netapp 6030 Filer running DOT 7.2.1 I get about 250 Mbps I've tried TCP windows size, Flow Control, LCAP, Static Link Aggregation, Singe port on the filer (no vif), straight crossover cable. From: Glenn Walker [mailto:ggwalker@mindspring.com] Sent: Tuesday, March 27, 2007 5:15 PM To: Langdon, Laughlin T. (Lock); toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers Typically, you shouldn't see any performance decrease - rather, you should get better performance. Are you seeing some sort of decrease? What I can point out: with some things (Excel\Word to be specific), MS will implement stuff that's not really documented for the file open\discovery which can cause problems, but I doubt that's what you are running into given the speed you are speaking of. Likewise, using Windows NLB (LB not HA) doesn't always go very well given the fact that it's not the best technology and sometimes can display interop problems with other vendors (not just NetApp). What exactly are you doing for your test? Glenn ________________________________ From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Langdon, Laughlin T. (Lock) Sent: Tuesday, March 27, 2007 2:33 PM To: toasters(a)mathworks.com Subject: CIFS overhead with Netapp Filers I was wondering what the CIFS overhead for a NetApp filer would be. Let's say for instance a Windows Server to Windows Server transfer on the same switch, same subnet, GIG copper interconnects, no TOE card, etc gets me up to about 50% utilization (500Mbps). Should that same server to a Netapp Filer see a 20-30% degradation in TX/RX speeds because of CIFS overhead? What should I expect for data rates in this type of scenario? Are there any tweaks anyone knows of to decrease this gap? (same results using static link aggregation, and LACP for the VIF) Thanks Lock

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ontap gx
by grace rante 31 Mar '07

31 Mar '07

Heya, Any ontap gx users out there? im interested in checking out the coral/file striping/HPO feature of GX and just want to check here first if anybody already had a chance to play with HPO and if you guys have any feedbacks... thanks, graziee

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Re: CIFS overhead with Netapp Filers
by Davies,Matt 30 Mar '07

30 Mar '07

Don't worry about it, I will try on Monday with new servers that have both broadcom and intel NICs in them and are what through out I get, are if that has any effect. Are the NICs in the servers you are testing with, inbuilt, PCI or PCI express ? And what manufacturer ? Cheers Matt -----Original Message----- From: Langdon, Laughlin T. (Lock) <Langdon.Lock(a)mayo.edu> To: Davies,Matt; slinkywizard(a)integra.net <slinkywizard(a)integra.net> CC: jack1729(a)gmail.com <jack1729(a)gmail.com>; chetan.ganjihal(a)netapp.com <chetan.ganjihal(a)netapp.com>; sgaroutte(a)gmail.com <sgaroutte(a)gmail.com>; ggwalker(a)mindspring.com <ggwalker(a)mindspring.com>; toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Fri Mar 30 22:19:26 2007 Subject: RE: CIFS overhead with Netapp Filers srry.. zipped that part of your post :) The weird thing is that you are getting the same speed (low end) for server to server that I get to my filer 250Mbps.. but I get upwards of 500-600Mbps from server to server.. ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Fri 3/30/2007 1:57 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: Re: CIFS overhead with Netapp Filers Did that, same speeds, sorry...... Matt -----Original Message----- From: Langdon, Laughlin T. (Lock) <Langdon.Lock(a)mayo.edu> To: Davies,Matt; slinkywizard(a)integra.net <slinkywizard(a)integra.net> CC: jack1729(a)gmail.com <jack1729(a)gmail.com>; chetan.ganjihal(a)netapp.com <chetan.ganjihal(a)netapp.com>; sgaroutte(a)gmail.com <sgaroutte(a)gmail.com>; ggwalker(a)mindspring.com <ggwalker(a)mindspring.com>; toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Fri Mar 30 21:50:27 2007 Subject: RE: CIFS overhead with Netapp Filers can you take that same file and copy it from a server to a server on the same network etc? ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Fri 3/30/2007 1:16 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers In the interim, I decided to unbox and startup our new FAS270 and quickly set it up. With just a single nic I have taken a 500MB zip file, and copied from server A to the filer and from server A to another server. Both servers are running single Nics Peak rate was around 250Mb/s, average rate was around 130Mb/s to both the filer and the server. The filer is running 7.0.5 I have made no changes to TCP window size on either the servers or the filers, the servers are Win2k3 SP1. I also did the same test on our production FAS250 and got the same result, which is running 7.1 Sorry I haven’t been much help Cheers Matt From: Langdon, Laughlin T. (Lock) [mailto:Langdon.Lock@mayo.edu] Sent: 30 March 2007 20:40 To: Davies,Matt; slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers :) Already been down that path.. Heck I've gone single port, with a crossover cable.. same reuslts.. That's why I'm here.. to see if we're the only ones experiencing this, or if it's just what NetaApp does (I hope not ;) ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Fri 3/30/2007 12:38 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers Shame, that might have answered the problem. Have you tried just using 1 ethernet port on the filer ? Have you tried using ports on the same switch, I have seen some problems with cross stack etherchannels, usually if the stack isn’t connected correctly. The following command will give you the details. UKswitchstack#sh switch stack-ring speed Stack Ring Speed : 32G Stack Ring Configuration: Full Stack Ring Protocol : StackWise UKswitchstack# My new filer arrived today, but will try and reproduce on Monday But just so you know: After enabling QOS on cat3750, certain application (mostly bursty and TCP based) may experience significant performance degradation. This issue is resolved starting Cisco IOS 12.2(25)SEE1. With the changes in the new release, the following global config. commands are still required : ------------------------------------------------------------------------------ mls qos queue-set output 1 threshold 2 3200 3200 100 3200 mls qos queue-set output 1 threshold 3 3200 3200 100 3200 ------------------------------------------------------------------------------ Cheers Matt From: Langdon, Laughlin T. (Lock) [mailto:Langdon.Lock@mayo.edu] Sent: 30 March 2007 20:17 To: Davies,Matt; slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers sorry, Yes I meant 3750. No QOS. ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Fri 3/30/2007 11:47 AM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: Re: CIFS overhead with Netapp Filers I presume you mean the 3750 ? Is QoS enabled on the switch ? -----Original Message----- From: Langdon, Laughlin T. (Lock) <Langdon.Lock(a)mayo.edu> To: Davies,Matt; slinkywizard(a)integra.net <slinkywizard(a)integra.net> CC: Jack Lyons <jack1729(a)gmail.com>; Ganjihal, Chetan <chetan.ganjihal(a)netapp.com>; Shane Garoutte <sgaroutte(a)gmail.com>; Glenn Walker <ggwalker(a)mindspring.com>; toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Fri Mar 30 19:37:47 2007 Subject: RE: CIFS overhead with Netapp Filers 2 Cisco 3950s cross connected in the back. Should be configed for LACP, 3 ports on one switch 3 ports on the other switch. ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Thu 3/29/2007 1:34 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers May be a stupid question, but what network switch are you using ? Cheers Matt ________________________________ From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Langdon, Laughlin T. (Lock) Sent: 29 March 2007 21:00 To: slinkywizard(a)integra.net Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers yes, that all looks true Aggregate is maxed out size of 39 disks Raid DP. I’ve also tried 10k FC drives, and 7.5k SATA drives. Same performance. no jumbo frames. No cifs tuning. can anyone else try this? take a large file and copy it from a windows server to a windows server. then copy the sam file from the same server to a netapp filer. you can use the nul trigger to really isolate network usage (doesn;t actually write the file) What Mbps do you get on each xfer? I get approx 500 mbps to a windows server, and 250 mbps to the filer. same file, same tcp window size, same server.. only delta is once to server once to filer. If you want to you can also do a read from the filer and the server to get the read performance. ________________________________ From: slinkymax0r [mailto:slinkywizard@integra.net] Sent: Thu 3/29/2007 10:48 AM To: Langdon, Laughlin T. (Lock) Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers > my previous posts mention that I'm running 7.2.1.. now I've updated to > 7.2.1.1 Snapshot of thie issue: User is running windows 2003. Throughput ramps up with multiple copies, just doesn't seem to "fill the pipe" with a single file copy operation. No network errors, TCP and lower level tuning on the stack hasn't improved the issue.* (Any Netdiag output to share?) No idea if CIFs buffer tuning has been done on the filer, per NetApp CIFS troubleshooting instructions. No info on Aggregate Layout or volume options (Might be helpful). No idea if jumbo frames are part of the mix. Accurate so far? Regards, Max > ________________________________ > > From: Jack Lyons [mailto:jack1729@gmail.com] > Sent: Thu 3/29/2007 3:42 AM > To: Ganjihal, Chetan > Cc: Shane Garoutte; Langdon, Laughlin T. (Lock); Glenn Walker; > toasters(a)mathworks.com > Subject: Re: CIFS overhead with Netapp Filers > > > > Make sure that you don't have smb signing enabled, it was by default in > 7.0.1 but 7.0.2 later is was disabled by default. > > Ganjihal, Chetan wrote: >> I think it would be important to know the state of the system(filer), >> the values set for different options, system utilization etc. >> If there is a perfstat output with stats gathered during the >> operation(file copy) being carried out, it will help understand the >> problem. >> cheers >> Chetan >> ------------------------------------------------------------------------ >> *From:* Shane Garoutte [mailto:sgaroutte@gmail.com] >> *Sent:* Thursday, March 29, 2007 12:59 AM >> *To:* Langdon, Laughlin T. ((Lock)) >> *Cc:* Glenn Walker; toasters(a)mathworks.com >> *Subject:* Re: CIFS overhead with Netapp Filers >> >> A quick crawl on NOW provided the following: >> http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs675 >> >> if CIFS performance is slow after investigating performance issues, >> modify the filer's CIFS negotiated buffer size. >> >> 1. Verify that hardware or software problems do not exist within the >> filer, network and client. >> 2. Record the CIFS negotiated buffer size by capturing the output of >> the filer command: >> options cifs.neg_buf_size >> 3. Enter the following filer commands: >> a. cifs terminate >> b. options cifs.neg_buf_size 16644 >> c. cifs restart >> 4. If the buffer size in step 3b does not improve performance, try the >> following buffer sizes: >> a. Use '17424'. >> Note: >> Starting with Data ONTAP 6.0.X, allow the buffer size to exceed 17424; >> therefore, upgrade to a release that fixes bug 33396 only if >> performance does not improve. >> b. Use '33472' for environments mixed with Windows NT and Windows 2000. >> c. Use '65340' for Windows 2000 only environments. >> 5. If performance remains slow: >> a. Re-confirm that hardware or software problems do not exist within >> the filer, network and client. >> b. Restore the original CIFS negotiated buffer size (refer to steps 2 >> and 3). >> c. During a performance interruption, capture a packet trace between >> the filer and Windows client. >> d. Send the packet trace to Network Appliance Technical Support for >> analysis. >> >> >> On Mar 28, 2007, at 8:33 AM, Langdon, Laughlin T. ((Lock)) wrote: >> >>> I'm doing a straight drag and drop using UNC paths with a single >>> 1.5gig zip file and a 2.2Gig binary File. If I add more streams (aka >>> start more than one copy on more than one server the filer happily >>> provides more bandwidth) >>> >>> From Windows server to windows server I get 500 Mbps >>> >>> From Windows server to a Netapp 6030 Filer running DOT 7.2.1 I get >>> about 250 Mbps >>> >>> I've tried TCP windows size, Flow Control, LCAP, Static Link >>> Aggregation, Singe port on the filer (no vif), straight crossover >>> cable. >>> >>> *From:* Glenn Walker [mailto:ggwalker@mindspring.com] >>> *Sent:* Tuesday, March 27, 2007 5:15 PM >>> *To:* Langdon, Laughlin T. (Lock); toasters(a)mathworks.com >>> <mailto:toasters@mathworks.com> >>> *Subject:* RE: CIFS overhead with Netapp Filers >>> >>> Typically, you shouldn't see any performance decrease - rather, you >>> should get better performance. >>> >>> Are you seeing some sort of decrease? >>> >>> What I can point out: with some things (Excel\Word to be specific), >>> MS will implement stuff that's not really documented for the file >>> open\discovery which can cause problems, but I doubt that's what you >>> are running into given the speed you are speaking of. Likewise, using >>> Windows NLB (LB not HA) doesn't always go very well given the fact >>> that it's not the best technology and sometimes can display interop >>> problems with other vendors (not just NetApp). >>> >>> What exactly are you doing for your test? >>> >>> Glenn >>> >>> ------------------------------------------------------------------------ >>> >>> *From:* owner-toasters(a)mathworks.com >>> [mailto:owner-toasters@mathworks.com] *On Behalf Of *Langdon, >>> Laughlin T. (Lock) >>> *Sent:* Tuesday, March 27, 2007 2:33 PM >>> *To:* toasters(a)mathworks.com <mailto:toasters@mathworks.com> >>> *Subject:* CIFS overhead with Netapp Filers >>> >>> I was wondering what the CIFS overhead for a NetApp filer would be. >>> >>> Let's say for instance a Windows Server to Windows Server transfer on >>> the same switch, same subnet, GIG copper interconnects, no TOE card, >>> etc gets me up to about 50% utilization (500Mbps). >>> >>> Should that same server to a Netapp Filer see a 20-30% degradation in >>> TX/RX speeds because of CIFS overhead? >>> >>> What should I expect for data rates in this type of scenario? Are >>> there any tweaks anyone knows of to decrease this gap? >>> >>> (same results using static link aggregation, and LACP for the VIF) >>> >>> Thanks >>> >>> Lock >>> >>> >> > > > ____________________________________________________________ This e-mail (including all attachments) is confidential and may be privileged. It is for the exclusive use of the addressee only. If you are not the addressee, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify us immediately at help(a)generalatlantic.com. Thank You.

2 1

Re: CIFS overhead with Netapp Filers
by Davies,Matt 30 Mar '07

30 Mar '07

Did that, same speeds, sorry...... Matt -----Original Message----- From: Langdon, Laughlin T. (Lock) <Langdon.Lock(a)mayo.edu> To: Davies,Matt; slinkywizard(a)integra.net <slinkywizard(a)integra.net> CC: jack1729(a)gmail.com <jack1729(a)gmail.com>; chetan.ganjihal(a)netapp.com <chetan.ganjihal(a)netapp.com>; sgaroutte(a)gmail.com <sgaroutte(a)gmail.com>; ggwalker(a)mindspring.com <ggwalker(a)mindspring.com>; toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Fri Mar 30 21:50:27 2007 Subject: RE: CIFS overhead with Netapp Filers can you take that same file and copy it from a server to a server on the same network etc? ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Fri 3/30/2007 1:16 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers In the interim, I decided to unbox and startup our new FAS270 and quickly set it up. With just a single nic I have taken a 500MB zip file, and copied from server A to the filer and from server A to another server. Both servers are running single Nics Peak rate was around 250Mb/s, average rate was around 130Mb/s to both the filer and the server. The filer is running 7.0.5 I have made no changes to TCP window size on either the servers or the filers, the servers are Win2k3 SP1. I also did the same test on our production FAS250 and got the same result, which is running 7.1 Sorry I haven’t been much help Cheers Matt From: Langdon, Laughlin T. (Lock) [mailto:Langdon.Lock@mayo.edu] Sent: 30 March 2007 20:40 To: Davies,Matt; slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers :) Already been down that path.. Heck I've gone single port, with a crossover cable.. same reuslts.. That's why I'm here.. to see if we're the only ones experiencing this, or if it's just what NetaApp does (I hope not ;) ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Fri 3/30/2007 12:38 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers Shame, that might have answered the problem. Have you tried just using 1 ethernet port on the filer ? Have you tried using ports on the same switch, I have seen some problems with cross stack etherchannels, usually if the stack isn’t connected correctly. The following command will give you the details. UKswitchstack#sh switch stack-ring speed Stack Ring Speed : 32G Stack Ring Configuration: Full Stack Ring Protocol : StackWise UKswitchstack# My new filer arrived today, but will try and reproduce on Monday But just so you know: After enabling QOS on cat3750, certain application (mostly bursty and TCP based) may experience significant performance degradation. This issue is resolved starting Cisco IOS 12.2(25)SEE1. With the changes in the new release, the following global config. commands are still required : ------------------------------------------------------------------------------ mls qos queue-set output 1 threshold 2 3200 3200 100 3200 mls qos queue-set output 1 threshold 3 3200 3200 100 3200 ------------------------------------------------------------------------------ Cheers Matt From: Langdon, Laughlin T. (Lock) [mailto:Langdon.Lock@mayo.edu] Sent: 30 March 2007 20:17 To: Davies,Matt; slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers sorry, Yes I meant 3750. No QOS. ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Fri 3/30/2007 11:47 AM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: jack1729(a)gmail.com; chetan.ganjihal(a)netapp.com; sgaroutte(a)gmail.com; ggwalker(a)mindspring.com; toasters(a)mathworks.com Subject: Re: CIFS overhead with Netapp Filers I presume you mean the 3750 ? Is QoS enabled on the switch ? -----Original Message----- From: Langdon, Laughlin T. (Lock) <Langdon.Lock(a)mayo.edu> To: Davies,Matt; slinkywizard(a)integra.net <slinkywizard(a)integra.net> CC: Jack Lyons <jack1729(a)gmail.com>; Ganjihal, Chetan <chetan.ganjihal(a)netapp.com>; Shane Garoutte <sgaroutte(a)gmail.com>; Glenn Walker <ggwalker(a)mindspring.com>; toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Fri Mar 30 19:37:47 2007 Subject: RE: CIFS overhead with Netapp Filers 2 Cisco 3950s cross connected in the back. Should be configed for LACP, 3 ports on one switch 3 ports on the other switch. ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Thu 3/29/2007 1:34 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers May be a stupid question, but what network switch are you using ? Cheers Matt ________________________________ From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Langdon, Laughlin T. (Lock) Sent: 29 March 2007 21:00 To: slinkywizard(a)integra.net Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers yes, that all looks true Aggregate is maxed out size of 39 disks Raid DP. I’ve also tried 10k FC drives, and 7.5k SATA drives. Same performance. no jumbo frames. No cifs tuning. can anyone else try this? take a large file and copy it from a windows server to a windows server. then copy the sam file from the same server to a netapp filer. you can use the nul trigger to really isolate network usage (doesn;t actually write the file) What Mbps do you get on each xfer? I get approx 500 mbps to a windows server, and 250 mbps to the filer. same file, same tcp window size, same server.. only delta is once to server once to filer. If you want to you can also do a read from the filer and the server to get the read performance. ________________________________ From: slinkymax0r [mailto:slinkywizard@integra.net] Sent: Thu 3/29/2007 10:48 AM To: Langdon, Laughlin T. (Lock) Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers > my previous posts mention that I'm running 7.2.1.. now I've updated to > 7.2.1.1 Snapshot of thie issue: User is running windows 2003. Throughput ramps up with multiple copies, just doesn't seem to "fill the pipe" with a single file copy operation. No network errors, TCP and lower level tuning on the stack hasn't improved the issue.* (Any Netdiag output to share?) No idea if CIFs buffer tuning has been done on the filer, per NetApp CIFS troubleshooting instructions. No info on Aggregate Layout or volume options (Might be helpful). No idea if jumbo frames are part of the mix. Accurate so far? Regards, Max > ________________________________ > > From: Jack Lyons [mailto:jack1729@gmail.com] > Sent: Thu 3/29/2007 3:42 AM > To: Ganjihal, Chetan > Cc: Shane Garoutte; Langdon, Laughlin T. (Lock); Glenn Walker; > toasters(a)mathworks.com > Subject: Re: CIFS overhead with Netapp Filers > > > > Make sure that you don't have smb signing enabled, it was by default in > 7.0.1 but 7.0.2 later is was disabled by default. > > Ganjihal, Chetan wrote: >> I think it would be important to know the state of the system(filer), >> the values set for different options, system utilization etc. >> If there is a perfstat output with stats gathered during the >> operation(file copy) being carried out, it will help understand the >> problem. >> cheers >> Chetan >> ------------------------------------------------------------------------ >> *From:* Shane Garoutte [mailto:sgaroutte@gmail.com] >> *Sent:* Thursday, March 29, 2007 12:59 AM >> *To:* Langdon, Laughlin T. ((Lock)) >> *Cc:* Glenn Walker; toasters(a)mathworks.com >> *Subject:* Re: CIFS overhead with Netapp Filers >> >> A quick crawl on NOW provided the following: >> http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs675 >> >> if CIFS performance is slow after investigating performance issues, >> modify the filer's CIFS negotiated buffer size. >> >> 1. Verify that hardware or software problems do not exist within the >> filer, network and client. >> 2. Record the CIFS negotiated buffer size by capturing the output of >> the filer command: >> options cifs.neg_buf_size >> 3. Enter the following filer commands: >> a. cifs terminate >> b. options cifs.neg_buf_size 16644 >> c. cifs restart >> 4. If the buffer size in step 3b does not improve performance, try the >> following buffer sizes: >> a. Use '17424'. >> Note: >> Starting with Data ONTAP 6.0.X, allow the buffer size to exceed 17424; >> therefore, upgrade to a release that fixes bug 33396 only if >> performance does not improve. >> b. Use '33472' for environments mixed with Windows NT and Windows 2000. >> c. Use '65340' for Windows 2000 only environments. >> 5. If performance remains slow: >> a. Re-confirm that hardware or software problems do not exist within >> the filer, network and client. >> b. Restore the original CIFS negotiated buffer size (refer to steps 2 >> and 3). >> c. During a performance interruption, capture a packet trace between >> the filer and Windows client. >> d. Send the packet trace to Network Appliance Technical Support for >> analysis. >> >> >> On Mar 28, 2007, at 8:33 AM, Langdon, Laughlin T. ((Lock)) wrote: >> >>> I'm doing a straight drag and drop using UNC paths with a single >>> 1.5gig zip file and a 2.2Gig binary File. If I add more streams (aka >>> start more than one copy on more than one server the filer happily >>> provides more bandwidth) >>> >>> From Windows server to windows server I get 500 Mbps >>> >>> From Windows server to a Netapp 6030 Filer running DOT 7.2.1 I get >>> about 250 Mbps >>> >>> I've tried TCP windows size, Flow Control, LCAP, Static Link >>> Aggregation, Singe port on the filer (no vif), straight crossover >>> cable. >>> >>> *From:* Glenn Walker [mailto:ggwalker@mindspring.com] >>> *Sent:* Tuesday, March 27, 2007 5:15 PM >>> *To:* Langdon, Laughlin T. (Lock); toasters(a)mathworks.com >>> <mailto:toasters@mathworks.com> >>> *Subject:* RE: CIFS overhead with Netapp Filers >>> >>> Typically, you shouldn't see any performance decrease - rather, you >>> should get better performance. >>> >>> Are you seeing some sort of decrease? >>> >>> What I can point out: with some things (Excel\Word to be specific), >>> MS will implement stuff that's not really documented for the file >>> open\discovery which can cause problems, but I doubt that's what you >>> are running into given the speed you are speaking of. Likewise, using >>> Windows NLB (LB not HA) doesn't always go very well given the fact >>> that it's not the best technology and sometimes can display interop >>> problems with other vendors (not just NetApp). >>> >>> What exactly are you doing for your test? >>> >>> Glenn >>> >>> ------------------------------------------------------------------------ >>> >>> *From:* owner-toasters(a)mathworks.com >>> [mailto:owner-toasters@mathworks.com] *On Behalf Of *Langdon, >>> Laughlin T. (Lock) >>> *Sent:* Tuesday, March 27, 2007 2:33 PM >>> *To:* toasters(a)mathworks.com <mailto:toasters@mathworks.com> >>> *Subject:* CIFS overhead with Netapp Filers >>> >>> I was wondering what the CIFS overhead for a NetApp filer would be. >>> >>> Let's say for instance a Windows Server to Windows Server transfer on >>> the same switch, same subnet, GIG copper interconnects, no TOE card, >>> etc gets me up to about 50% utilization (500Mbps). >>> >>> Should that same server to a Netapp Filer see a 20-30% degradation in >>> TX/RX speeds because of CIFS overhead? >>> >>> What should I expect for data rates in this type of scenario? Are >>> there any tweaks anyone knows of to decrease this gap? >>> >>> (same results using static link aggregation, and LACP for the VIF) >>> >>> Thanks >>> >>> Lock >>> >>> >> > > > ____________________________________________________________ This e-mail (including all attachments) is confidential and may be privileged. It is for the exclusive use of the addressee only. If you are not the addressee, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify us immediately at help(a)generalatlantic.com. Thank You.

2 1

Re: CIFS overhead with Netapp Filers
by Davies,Matt 30 Mar '07

30 Mar '07

I presume you mean the 3750 ? Is QoS enabled on the switch ? -----Original Message----- From: Langdon, Laughlin T. (Lock) <Langdon.Lock(a)mayo.edu> To: Davies,Matt; slinkywizard(a)integra.net <slinkywizard(a)integra.net> CC: Jack Lyons <jack1729(a)gmail.com>; Ganjihal, Chetan <chetan.ganjihal(a)netapp.com>; Shane Garoutte <sgaroutte(a)gmail.com>; Glenn Walker <ggwalker(a)mindspring.com>; toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Fri Mar 30 19:37:47 2007 Subject: RE: CIFS overhead with Netapp Filers 2 Cisco 3950s cross connected in the back. Should be configed for LACP, 3 ports on one switch 3 ports on the other switch. ________________________________ From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] Sent: Thu 3/29/2007 1:34 PM To: Langdon, Laughlin T. (Lock); slinkywizard(a)integra.net Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers May be a stupid question, but what network switch are you using ? Cheers Matt ________________________________ From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Langdon, Laughlin T. (Lock) Sent: 29 March 2007 21:00 To: slinkywizard(a)integra.net Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers yes, that all looks true Aggregate is maxed out size of 39 disks Raid DP. I’ve also tried 10k FC drives, and 7.5k SATA drives. Same performance. no jumbo frames. No cifs tuning. can anyone else try this? take a large file and copy it from a windows server to a windows server. then copy the sam file from the same server to a netapp filer. you can use the nul trigger to really isolate network usage (doesn;t actually write the file) What Mbps do you get on each xfer? I get approx 500 mbps to a windows server, and 250 mbps to the filer. same file, same tcp window size, same server.. only delta is once to server once to filer. If you want to you can also do a read from the filer and the server to get the read performance. ________________________________ From: slinkymax0r [mailto:slinkywizard@integra.net] Sent: Thu 3/29/2007 10:48 AM To: Langdon, Laughlin T. (Lock) Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers > my previous posts mention that I'm running 7.2.1.. now I've updated to > 7.2.1.1 Snapshot of thie issue: User is running windows 2003. Throughput ramps up with multiple copies, just doesn't seem to "fill the pipe" with a single file copy operation. No network errors, TCP and lower level tuning on the stack hasn't improved the issue.* (Any Netdiag output to share?) No idea if CIFs buffer tuning has been done on the filer, per NetApp CIFS troubleshooting instructions. No info on Aggregate Layout or volume options (Might be helpful). No idea if jumbo frames are part of the mix. Accurate so far? Regards, Max > ________________________________ > > From: Jack Lyons [mailto:jack1729@gmail.com] > Sent: Thu 3/29/2007 3:42 AM > To: Ganjihal, Chetan > Cc: Shane Garoutte; Langdon, Laughlin T. (Lock); Glenn Walker; > toasters(a)mathworks.com > Subject: Re: CIFS overhead with Netapp Filers > > > > Make sure that you don't have smb signing enabled, it was by default in > 7.0.1 but 7.0.2 later is was disabled by default. > > Ganjihal, Chetan wrote: >> I think it would be important to know the state of the system(filer), >> the values set for different options, system utilization etc. >> If there is a perfstat output with stats gathered during the >> operation(file copy) being carried out, it will help understand the >> problem. >> cheers >> Chetan >> ------------------------------------------------------------------------ >> *From:* Shane Garoutte [mailto:sgaroutte@gmail.com] >> *Sent:* Thursday, March 29, 2007 12:59 AM >> *To:* Langdon, Laughlin T. ((Lock)) >> *Cc:* Glenn Walker; toasters(a)mathworks.com >> *Subject:* Re: CIFS overhead with Netapp Filers >> >> A quick crawl on NOW provided the following: >> http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs675 >> >> if CIFS performance is slow after investigating performance issues, >> modify the filer's CIFS negotiated buffer size. >> >> 1. Verify that hardware or software problems do not exist within the >> filer, network and client. >> 2. Record the CIFS negotiated buffer size by capturing the output of >> the filer command: >> options cifs.neg_buf_size >> 3. Enter the following filer commands: >> a. cifs terminate >> b. options cifs.neg_buf_size 16644 >> c. cifs restart >> 4. If the buffer size in step 3b does not improve performance, try the >> following buffer sizes: >> a. Use '17424'. >> Note: >> Starting with Data ONTAP 6.0.X, allow the buffer size to exceed 17424; >> therefore, upgrade to a release that fixes bug 33396 only if >> performance does not improve. >> b. Use '33472' for environments mixed with Windows NT and Windows 2000. >> c. Use '65340' for Windows 2000 only environments. >> 5. If performance remains slow: >> a. Re-confirm that hardware or software problems do not exist within >> the filer, network and client. >> b. Restore the original CIFS negotiated buffer size (refer to steps 2 >> and 3). >> c. During a performance interruption, capture a packet trace between >> the filer and Windows client. >> d. Send the packet trace to Network Appliance Technical Support for >> analysis. >> >> >> On Mar 28, 2007, at 8:33 AM, Langdon, Laughlin T. ((Lock)) wrote: >> >>> I'm doing a straight drag and drop using UNC paths with a single >>> 1.5gig zip file and a 2.2Gig binary File. If I add more streams (aka >>> start more than one copy on more than one server the filer happily >>> provides more bandwidth) >>> >>> From Windows server to windows server I get 500 Mbps >>> >>> From Windows server to a Netapp 6030 Filer running DOT 7.2.1 I get >>> about 250 Mbps >>> >>> I've tried TCP windows size, Flow Control, LCAP, Static Link >>> Aggregation, Singe port on the filer (no vif), straight crossover >>> cable. >>> >>> *From:* Glenn Walker [mailto:ggwalker@mindspring.com] >>> *Sent:* Tuesday, March 27, 2007 5:15 PM >>> *To:* Langdon, Laughlin T. (Lock); toasters(a)mathworks.com >>> <mailto:toasters@mathworks.com> >>> *Subject:* RE: CIFS overhead with Netapp Filers >>> >>> Typically, you shouldn't see any performance decrease - rather, you >>> should get better performance. >>> >>> Are you seeing some sort of decrease? >>> >>> What I can point out: with some things (Excel\Word to be specific), >>> MS will implement stuff that's not really documented for the file >>> open\discovery which can cause problems, but I doubt that's what you >>> are running into given the speed you are speaking of. Likewise, using >>> Windows NLB (LB not HA) doesn't always go very well given the fact >>> that it's not the best technology and sometimes can display interop >>> problems with other vendors (not just NetApp). >>> >>> What exactly are you doing for your test? >>> >>> Glenn >>> >>> ------------------------------------------------------------------------ >>> >>> *From:* owner-toasters(a)mathworks.com >>> [mailto:owner-toasters@mathworks.com] *On Behalf Of *Langdon, >>> Laughlin T. (Lock) >>> *Sent:* Tuesday, March 27, 2007 2:33 PM >>> *To:* toasters(a)mathworks.com <mailto:toasters@mathworks.com> >>> *Subject:* CIFS overhead with Netapp Filers >>> >>> I was wondering what the CIFS overhead for a NetApp filer would be. >>> >>> Let's say for instance a Windows Server to Windows Server transfer on >>> the same switch, same subnet, GIG copper interconnects, no TOE card, >>> etc gets me up to about 50% utilization (500Mbps). >>> >>> Should that same server to a Netapp Filer see a 20-30% degradation in >>> TX/RX speeds because of CIFS overhead? >>> >>> What should I expect for data rates in this type of scenario? Are >>> there any tweaks anyone knows of to decrease this gap? >>> >>> (same results using static link aggregation, and LACP for the VIF) >>> >>> Thanks >>> >>> Lock >>> >>> >> > > > ____________________________________________________________ This e-mail (including all attachments) is confidential and may be privileged. It is for the exclusive use of the addressee only. If you are not the addressee, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify us immediately at help(a)generalatlantic.com. Thank You.

2 5

RE: CIFS overhead with Netapp Filers
by Langdon, Laughlin T. (Lock) 30 Mar '07

30 Mar '07

yes, that all looks true Aggregate is maxed out size of 39 disks Raid DP. I've also tried 10k FC drives, and 7.5k SATA drives. Same performance. no jumbo frames. No cifs tuning. can anyone else try this? take a large file and copy it from a windows server to a windows server. then copy the sam file from the same server to a netapp filer. you can use the nul trigger to really isolate network usage (doesn;t actually write the file) What Mbps do you get on each xfer? I get approx 500 mbps to a windows server, and 250 mbps to the filer. same file, same tcp window size, same server.. only delta is once to server once to filer. If you want to you can also do a read from the filer and the server to get the read performance. ________________________________ From: slinkymax0r [mailto:slinkywizard@integra.net] Sent: Thu 3/29/2007 10:48 AM To: Langdon, Laughlin T. (Lock) Cc: Jack Lyons; Ganjihal, Chetan; Shane Garoutte; Glenn Walker; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers > my previous posts mention that I'm running 7.2.1.. now I've updated to > 7.2.1.1 Snapshot of thie issue: User is running windows 2003. Throughput ramps up with multiple copies, just doesn't seem to "fill the pipe" with a single file copy operation. No network errors, TCP and lower level tuning on the stack hasn't improved the issue.* (Any Netdiag output to share?) No idea if CIFs buffer tuning has been done on the filer, per NetApp CIFS troubleshooting instructions. No info on Aggregate Layout or volume options (Might be helpful). No idea if jumbo frames are part of the mix. Accurate so far? Regards, Max > ________________________________ > > From: Jack Lyons [mailto:jack1729@gmail.com] > Sent: Thu 3/29/2007 3:42 AM > To: Ganjihal, Chetan > Cc: Shane Garoutte; Langdon, Laughlin T. (Lock); Glenn Walker; > toasters(a)mathworks.com > Subject: Re: CIFS overhead with Netapp Filers > > > > Make sure that you don't have smb signing enabled, it was by default in > 7.0.1 but 7.0.2 later is was disabled by default. > > Ganjihal, Chetan wrote: >> I think it would be important to know the state of the system(filer), >> the values set for different options, system utilization etc. >> If there is a perfstat output with stats gathered during the >> operation(file copy) being carried out, it will help understand the >> problem. >> cheers >> Chetan >> ------------------------------------------------------------------------ >> *From:* Shane Garoutte [mailto:sgaroutte@gmail.com] >> *Sent:* Thursday, March 29, 2007 12:59 AM >> *To:* Langdon, Laughlin T. ((Lock)) >> *Cc:* Glenn Walker; toasters(a)mathworks.com >> *Subject:* Re: CIFS overhead with Netapp Filers >> >> A quick crawl on NOW provided the following: >> http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs675 >> >> if CIFS performance is slow after investigating performance issues, >> modify the filer's CIFS negotiated buffer size. >> >> 1. Verify that hardware or software problems do not exist within the >> filer, network and client. >> 2. Record the CIFS negotiated buffer size by capturing the output of >> the filer command: >> options cifs.neg_buf_size >> 3. Enter the following filer commands: >> a. cifs terminate >> b. options cifs.neg_buf_size 16644 >> c. cifs restart >> 4. If the buffer size in step 3b does not improve performance, try the >> following buffer sizes: >> a. Use '17424'. >> Note: >> Starting with Data ONTAP 6.0.X, allow the buffer size to exceed 17424; >> therefore, upgrade to a release that fixes bug 33396 only if >> performance does not improve. >> b. Use '33472' for environments mixed with Windows NT and Windows 2000. >> c. Use '65340' for Windows 2000 only environments. >> 5. If performance remains slow: >> a. Re-confirm that hardware or software problems do not exist within >> the filer, network and client. >> b. Restore the original CIFS negotiated buffer size (refer to steps 2 >> and 3). >> c. During a performance interruption, capture a packet trace between >> the filer and Windows client. >> d. Send the packet trace to Network Appliance Technical Support for >> analysis. >> >> >> On Mar 28, 2007, at 8:33 AM, Langdon, Laughlin T. ((Lock)) wrote: >> >>> I'm doing a straight drag and drop using UNC paths with a single >>> 1.5gig zip file and a 2.2Gig binary File. If I add more streams (aka >>> start more than one copy on more than one server the filer happily >>> provides more bandwidth) >>> >>> From Windows server to windows server I get 500 Mbps >>> >>> From Windows server to a Netapp 6030 Filer running DOT 7.2.1 I get >>> about 250 Mbps >>> >>> I've tried TCP windows size, Flow Control, LCAP, Static Link >>> Aggregation, Singe port on the filer (no vif), straight crossover >>> cable. >>> >>> *From:* Glenn Walker [mailto:ggwalker@mindspring.com] >>> *Sent:* Tuesday, March 27, 2007 5:15 PM >>> *To:* Langdon, Laughlin T. (Lock); toasters(a)mathworks.com >>> <mailto:toasters@mathworks.com> >>> *Subject:* RE: CIFS overhead with Netapp Filers >>> >>> Typically, you shouldn't see any performance decrease - rather, you >>> should get better performance. >>> >>> Are you seeing some sort of decrease? >>> >>> What I can point out: with some things (Excel\Word to be specific), >>> MS will implement stuff that's not really documented for the file >>> open\discovery which can cause problems, but I doubt that's what you >>> are running into given the speed you are speaking of. Likewise, using >>> Windows NLB (LB not HA) doesn't always go very well given the fact >>> that it's not the best technology and sometimes can display interop >>> problems with other vendors (not just NetApp). >>> >>> What exactly are you doing for your test? >>> >>> Glenn >>> >>> ------------------------------------------------------------------------ >>> >>> *From:* owner-toasters(a)mathworks.com >>> [mailto:owner-toasters@mathworks.com] *On Behalf Of *Langdon, >>> Laughlin T. (Lock) >>> *Sent:* Tuesday, March 27, 2007 2:33 PM >>> *To:* toasters(a)mathworks.com <mailto:toasters@mathworks.com> >>> *Subject:* CIFS overhead with Netapp Filers >>> >>> I was wondering what the CIFS overhead for a NetApp filer would be. >>> >>> Let's say for instance a Windows Server to Windows Server transfer on >>> the same switch, same subnet, GIG copper interconnects, no TOE card, >>> etc gets me up to about 50% utilization (500Mbps). >>> >>> Should that same server to a Netapp Filer see a 20-30% degradation in >>> TX/RX speeds because of CIFS overhead? >>> >>> What should I expect for data rates in this type of scenario? Are >>> there any tweaks anyone knows of to decrease this gap? >>> >>> (same results using static link aggregation, and LACP for the VIF) >>> >>> Thanks >>> >>> Lock >>> >>> >> > > >

3 3

bug #1287 problems with netgroup and rw access list
by Kerry Herschel 30 Mar '07

30 Mar '07

Hi, Has anyone had problems with using a netgroup name in a rw access list in an exports file? I just found bug #1287. I am using a netgroup file on the filer to define names to use in the exports file currently but I have had some problems. I am running DOT 7.0.3. It would be a real drawback if I can't use a netgroup name for rw access. Thanks, Kerry

4 4

RE: CIFS overhead with Netapp Filers
by Dean, Phil (ITO) 29 Mar '07

29 Mar '07

Just one question, Are you sure that the NIC duplex settings are correct, your not using auto on a port switch that is set as 100/Full? Also have you checked that you are not getting network errors on the filer side. Regards, Phil -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Glenn Walker Sent: Thursday, 29 March 2007 10:46 AM To: Shane Garoutte Cc: Langdon, Laughlin T. ((Lock)); toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers MS's implementation of NFS? Less overhead? Highly doubtful ;) I'm pretty sure that MS would make CIFS faster by making NFS slower... ________________________________ From: Shane Garoutte [mailto:sgaroutte@gmail.com] Sent: Wednesday, March 28, 2007 8:28 PM To: Glenn Walker Cc: Langdon, Laughlin T. ((Lock)); toasters(a)mathworks.com Subject: Re: CIFS overhead with Netapp Filers On Mar 28, 2007, at 5:04 PM, Glenn Walker wrote: As for the SMB vs CIFS thing, they're essentially the same. If you're using Windows, you're using CIFS (unless you've loaded services for unix, but I'm pretty sure you'd realize if you were utilizing NFS by accident). Due to the fact that it would be faster with less overhead? Oh wait, this is windows... nm ;) jk ************** IMPORTANT MESSAGE ***************************** This e-mail message is intended only for the addressee(s) and contains information which may be confidential. If you are not the intended recipient please advise the sender by return email, do not use or disclose the contents, and delete the message and any attachments from your system. Unless specifically indicated, this email does not constitute formal advice or commitment by the sender or the Commonwealth Bank of Australia (ABN 48 123 123 124) or its subsidiaries. We can be contacted through our web site: commbank.com.au. If you no longer wish to receive commercial electronic messages from us, please reply to this e-mail by typing Unsubscribe in the subject line. **************************************************************

2 1

RE: CIFS share on a Unix filesystem and Office 2003
by Miller, Michael CTR USTRANSCOM J2 29 Mar '07

29 Mar '07

I already have SecureShare in place. It's a great tool. I meant to put the permissions data in the last message. They are as expected. Mike -----Original Message----- From: tmac [mailto:tmacmd@gmail.com] Sent: Thursday, March 29, 2007 9:56 AM To: Miller, Michael CTR USTRANSCOM J2 Cc: toasters(a)mathworks.com Subject: Re: CIFS share on a Unix filesystem and Office 2003 Get the SecureShare Access: http://now.netapp.com/NOW/download/tools/ssaccess/ It should run on any MS platform. If you have not used it, after you install it (which takes seconds) whenever you right-click on a file that is on a Filer and select properties, you will get another tab...SecureShare. Here you can see UID/GID and all unix perms including sticky bits and so forth. If the permissions allow, you can also change the UNIX perms. This can also be used in a NTFS qtree, but everything is grayed out. I also do not think MS will help. Even though it is likely an OFFICE problem, Work with NetApp for a solution. MS will not change their application. --tmac On 3/29/07, Miller, Michael CTR USTRANSCOM J2 <michael.miller.ctr(a)ustranscom.mil> wrote: > I also think it is an Office issue, just wanted to see whatever one > else thought before I fought for a Microsoft trouble call. > > One part I forgot in the original message is that all tests were done > on the same file, in the same location, with the same Office 2003 load > and by the same user(me) with domain admin and root rights. The only > change was the system the test was done on. > > Mike > > > -----Original Message----- > From: tmac [mailto:tmacmd@gmail.com] > Sent: Thursday, March 29, 2007 9:10 AM > To: Miller, Michael CTR USTRANSCOM J2 > Cc: toasters(a)mathworks.com > Subject: Re: CIFS share on a Unix filesystem and Office 2003 > > > I am not positive, but this could be an issue with OFFICE. > > MS apps routinely create a temp file (a tilde file) and when you save, > it deletes the original and copies the tilde file into its' place. > > This wrecks havoc with a NetApp using MIXED or UNIX qtrees. Since the > original file is gone, the new file is written with new permissions. > > Check the UNIX perms on the file and see if they are what you expect. > > Maybe....you have you user mapping setup so your account maps to root? > Then your file could be written with UID 0, and then you may not be > able to access from Windows. > > In the NTFS side, even though the UID is root, there is also an ACE > that shows you as the owner (not root). > > There is a fix in ONTAP, although I do not think it was introduced > until 7.2. I think the option is "cifs.preserve_unix_security" > > > > On 3/29/07, Miller, Michael CTR USTRANSCOM J2 > <michael.miller.ctr(a)ustranscom.mil> wrote: > > > > > > > > I don't know if anyone can help but I thought I would ask. > > > > We host home directories and common file storage on a FAS960 running > > OnTap 7.0.3 with CIFS and NFS licenses. We use NTFS shares for > > Windows > > > roaming profiles but everything else is a Unix filesystem shared by > > CIFS and NFS. > > > > We had a problem show up when using Office 2003 with the Document > > Image Writer feature that I have not been able to track down. > > > > Using XP or 2003 systems I can print to the Document Image Writer > > printer, open the file it creates, modify and then save the file > > with no problems. > > > > On a 2000 Pro system I can create the file but I can not modify it > > after that from the Office 2003 MDI application. Whenever the file > > is opened you can make changes but you can not save the changes and > > there > > > are no errors or warnings generated. If the file is on a NTFS > > filesystem (NetApp or > > otherwise) you can make all of the changes you want. It is also > possible to > > create the file on the NFS filesystem, copy it to a NTFS filesystem, > make > > and save changes and then copy it back to the NFS filesystem > > properly. > > > > I have done all of the normal research and have even done packet > > captures. Nothing indicates what the issue might be. Any thoughts or > > hints? > > > > Thanks > > Mike Miller > > General Dynamics Information Technology > > Michael.Miller.ctr(a)ustranscom.mil Michael.Miller(a)gdit.com > > > > > -- > --tmac > > RedHat Certified Engineer > -- --tmac RedHat Certified Engineer

1 0

CIFS share on a Unix filesystem and Office 2003
by Miller, Michael CTR USTRANSCOM J2 29 Mar '07

29 Mar '07

I don't know if anyone can help but I thought I would ask. We host home directories and common file storage on a FAS960 running OnTap 7.0.3 with CIFS and NFS licenses. We use NTFS shares for Windows roaming profiles but everything else is a Unix filesystem shared by CIFS and NFS. We had a problem show up when using Office 2003 with the Document Image Writer feature that I have not been able to track down. Using XP or 2003 systems I can print to the Document Image Writer printer, open the file it creates, modify and then save the file with no problems. On a 2000 Pro system I can create the file but I can not modify it after that from the Office 2003 MDI application. Whenever the file is opened you can make changes but you can not save the changes and there are no errors or warnings generated. If the file is on a NTFS filesystem (NetApp or otherwise) you can make all of the changes you want. It is also possible to create the file on the NFS filesystem, copy it to a NTFS filesystem, make and save changes and then copy it back to the NFS filesystem properly. I have done all of the normal research and have even done packet captures. Nothing indicates what the issue might be. Any thoughts or hints? Thanks Mike Miller General Dynamics Information Technology Michael.Miller.ctr(a)ustranscom.mil Michael.Miller(a)gdit.com

2 2

CIFS overhead with Netapp Filers
by Langdon, Laughlin T. (Lock) 29 Mar '07

29 Mar '07

I was wondering what the CIFS overhead for a NetApp filer would be. Let's say for instance a Windows Server to Windows Server transfer on the same switch, same subnet, GIG copper interconnects, no TOE card, etc gets me up to about 50% utilization (500Mbps). Should that same server to a Netapp Filer see a 20-30% degradation in TX/RX speeds because of CIFS overhead? What should I expect for data rates in this type of scenario? Are there any tweaks anyone knows of to decrease this gap? (same results using static link aggregation, and LACP for the VIF) Thanks Lock

6 15

Re: CIFS overhead with Netapp Filers
by Bryan_West＠shamrockfoods.com 28 Mar '07

28 Mar '07

It could be your network cards we experienced the same issue years ago and replacing the network cards on our windows servers solved it. ----- Original Message ----- From: "Paul Keating" [pkeating(a)bank-banque-canada.ca] Sent: 03/28/2007 08:58 AM To: "Langdon, Laughlin T. (Lock)" <Langdon.Lock(a)Mayo.EDU>;"Brosseau, Paul" <Paul.Brosseau(a)netapp.com>;<toasters(a)mathworks.com> Subject: RE: CIFS overhead with Netapp Filers Windows *is* CIFS. Even many MS docs have dropped references to SMB, or will say something like "...CIFS (formerly SMB)...." Paul -- -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Langdon, Laughlin T. (Lock) Sent: March 28, 2007 11:34 AM To: Brosseau, Paul; toasters(a)mathworks.com Subject: RE: CIFS overhead with Netapp Filers I'm assuming the windows to windows xfer is actually SMB not CIFS ==================================================================================== La version française suit le texte anglais. ------------------------------------------------------------------------------------ This email may contain privileged and/or confidential information, and the Bank of Canada does not waive any related rights. Any distribution, use, or copying of this email or the information it contains by other than the intended recipient is unauthorized. If you received this email in error please delete it immediately from your system and notify the sender promptly by email that you have done so. ------------------------------------------------------------------------------------ Le présent courriel peut contenir de l'information privilégiée ou confidentielle. La Banque du Canada ne renonce pas aux droits qui s'y rapportent. Toute diffusion, utilisation ou copie de ce courriel ou des renseignements qu'il contient par une personne autre que le ou les destinataires désignés est interdite. Si vous recevez ce courriel par erreur, veuillez le supprimer immédiatement et envoyer sans délai à l'expéditeur un message électronique pour l'aviser que vous avez éliminé de votre ordinateur toute copie du courriel reçu.

2 1

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