toasters

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13531 discussions

RE: IP 4700 vs Netapp
by Sam Schorr 30 Jan '02

30 Jan '02

G.D. Are you sure about the statement that the EMC does not allow NFS and CIFS on the same volume? When we evaluated the Celerra product (which I'm guessing is the forerunner of the IP4700), it certainly allowed for this. If I recall correctly, the underlying file system was UFSx, and the CIFS was layered on through a version of Samba running on SCO UNIX (the Celerra controllers). --sam -----Original Message----- From: Mr. G. D. Geen [mailto:geen@ti.com] Sent: Wednesday, January 30, 2002 9:03 AM To: toasters Subject: Re: IP 4700 vs Netapp Good day all, I would like to respond to this topic. Though we have no EMC in our design environment, EMC has made several trips to Texas Instruments to inform us on their product line. Back in June of 2001, EMC reported to us on the capabilities of the EMC IP4700 and please let me know if they have made updates to the sales pitch since then. The IP4700 is said to perform 50K NFS ops/sec. Now this is good but one must note that this is using four channels which computes to 12.5K NFS ops/sec per channel. That is less performance per channel than a single F720 NetApp filer. Along the same lines, EMC rated throughput as 340MB/sec. Again this is using all four channels. As for scallability the new NetApp F840 scales just as well -- 12TB today and 18TB in a new DOT release due this year. This is roughly equal to that of the IP4700 as stated in June of 2001. The IP4700 supports RAID 0, 1, 0+1, and 5 whereas the NetApp is RAID4 and WAFL file system. I will let you make the call there but I am happy with the performance of the WAFL system and RAID 4 of the NetApp. The storage processor of the IP4700 consisted of two PIII Celerons. This may be upgraded by now. As for disk usage, I found this to be an interesting concept but I will let you decide which is better. On the EMC all disks in a RAID group must be the same size, no different from NetApp. Upon disk failure, however, the EMC grabs the first available disk. Now if you have multiple size disks in your system, the spare disk *must* be of the largest size you have on your system. On the NetApp, the filer will grab the smallest spare disk of equal or larger size of the one that failed. Thus, if you have 36GB and 72GB drives on your NetApp and a 36GB drive fails, the NetApp will try to find a 36GB spare. If one is not found then a larger spare will be resized and used as a spare. Another interesting point is EMC's spare disk designation. On an EMC a spare disk is always a spare disk. If a disk failure were to occur, the RAID group will rebuild using a spare disk. Once the failed disk is replaced, the RAID group is once again rebuilds on to the replaced disk. For each disk failure there are two rebuilds of the data. During this time a filer is most vulnerable to a second disk failure. There is also performance degradation during rebuilds. On the NetApp, there is only one rebuild of the data on to the spare disk. When the faild disk is replaced, it becomes the spare. Some other features of the EMC are mirror root disk, battery backup, and write cache mirrored to disk on power outage. The battery backup of the EMC is not meant to keep the filer running indefinitely, just long enough to move the write cashe on to disk and shut down the filer gracefully. NetApp is using "motor cycle" battaries in F800 series filers to maintain the NVRAM. Though I have never run in to a problem where I lost the NVRAM contents due to dead battery, there is the remote possibility. One other issue, if you are running in a mixed environment, EMC does not allow for both NFS and CIFS to be running on the same volume. Both, though, may be running on the same filer. NetApp does allow you to run both NFS and CIFS file systems on the same volume. Just some thoughts. -gdg Rahul Kumar wrote: > Hi > I am also interested in knowing for the same.... > EMC was recently at our place and they claimed to be faster than > netapp's like ops /sec etc etc. Their demo box is yet to come. > If anyone has tested IP4700 let us know > Thanks > Rahul > > -----Original Message----- > From: Mike Ball [mailto:MBall@datalink.com] > Sent: Tuesday, January 29, 2002 8:06 PM > To: toasters > Subject: IP 4700 vs Netapp > > Has anyone tested a EMC IP 4700 in the last 6 months? EMC claims they > have greatly improved the box in the last six months, but I have not > been able to > get any specifics as to what they have done. > Thank you, > Mike

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RE: IP 4700 vs Netapp
by Rahul Kumar 30 Jan '02

30 Jan '02

Hi I am also interested in knowing for the same.... EMC was recently at our place and they claimed to be faster than netapp's like ops /sec etc etc. Their demo box is yet to come. If anyone has tested IP4700 let us know Thanks Rahul -----Original Message----- From: Mike Ball [mailto:MBall@datalink.com] Sent: Tuesday, January 29, 2002 8:06 PM To: toasters Subject: IP 4700 vs Netapp Has anyone tested a EMC IP 4700 in the last 6 months? EMC claims they have greatly improved the box in the last six months, but I have not been able to get any specifics as to what they have done. Thank you, Mike

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Semiconductor Training Courses
by Heather Wilson 29 Jan '02

29 Jan '02

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NDMP Direct Access Recover and ACLs
by Chetrit Marc 29 Jan '02

29 Jan '02

Hello, I am a NDMP Legato Networker user, backup seems OK but when I try to restore files using recover interface and DAR (Direct Access Recover), I get always a message : No ACLs will be recovered .... (files are recovered but no ACLs) DATAONTAP version : 6.1.2R1 Networker : 6.1.1 Tape library is connected to Netapp. Thanks for your help. Best regards. Marc. _____________________________________________ SIEMENS V D O Siemens VDO Automotive SAS A u t o m o t i v e BP 1149 1 Avenue Paul Ourliac 31036 Toulouse cedex 1 (France) Marc Chetrit OI ITS Back Office Phone : 33 (5) 6119 8421 Fax : 33 (5) 6119 2515 mailto:marc.chetrit@at.siemens.fr <mailto:marc.chetrit@at.siemens.fr>

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LDAP auth (2)
by Frank Bonnet 29 Jan '02

29 Jan '02

Hi I posted a request yesterday about the LDAP auth support by Ontap . I received very few answers ( thanks to those that respond ) I received NO answers from NetApp folks that are usually very reactives. When we bought our F85 filer last year people at NetApp France said LDAP will be supported soon by Ontap. THAT IS WHY we bought this filer as we are migrating ALL of our authentication process to LDAP ( NOT MS Active Directory ) for all of our workstations clients. As many high educationnal sites we have many mixed environnement computers , HP-UX, Linux, windows9x/2000/NT, FreeBSD, Solaris ... we need to centralize authetication to LDAP to have an unique and centralized auth process for all computers. Unfortunately Ontap for now doesn't support LDAP auth and I am stuck as our filer will centralize all users data ... This happen BY THE FAULT of NetApp people who said Ontap WILL support LDAP auth soon ... What am I supposed to do NOW ????? -- Frank Bonnet

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IP 4700 vs Netapp
by Mike Ball 29 Jan '02

29 Jan '02

Has anyone tested a EMC IP 4700 in the last 6 months? EMC claims they have greatly improved the box in the last six months, but I have not been able to get any specifics as to what they have done. Thank you, Mike

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RE: LDAP auth (2)
by Joe Luchtenberg 29 Jan '02

29 Jan '02

I'm not an engineer -- just a concerned sales guy, who likes to get a little more technical than is probably good for me. :-) Sounds like you're trying to implement your F85 in a mixed-mode Win2000 domain with LDAP authentication. To my limitted understanding it seems you should be able to do this with ONTAP 6.1 and later. There are three principle documents that address this that I could find in a search on NOW: Win2K overview: http://www.netapp.com/tech_library/3113.html Integrating with Active Directory overview: http://www.netapp.com/tech_library/3124.html Win2K technical FAQ for ONTAP 6.1 and later: http://now.netapp.com/NOW/knowledge/docs/olio/guides/win2000_6_1_later.shtml I know the second link may seem on the surface not to apply, since you stressed that your issue is not concerning MS Active Directory. However, in Section 2 of that document it does address filer behavior on startup to join the domain in a mixed-mode environment. Excerpt follows: <<snip>> Filer behavior in pre Windows 2000 or Windows 2000 domains If the filer is a member of a Windows NT or Windows 2000 mixed-mode domain - Filers can locate domain controllers using NetBIOS name resolution by querying WINS or by using b-node broadcasts - Filers may register each interface with WINS (WINS registration can be turned on/off per interface) - Filers will authenticate incoming sessions against a Windows domain controller using the Windows NT LAN Manager (NTLM) authentication protocol <<end snip>> If you're having trouble authenticating, then perhaps this KB article can help: http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs2782&resource= For what it's worth, the Toasters discussion list is a community of individuals who share an interest in NetApp filers, and generally they are extremely helpful. However, this is not a forum that is under any obligation to support you, and you should not treat it as such. NetApp's customer support is very highly regarded, and I would suggest you raise your concerns/questions with them. If you do not achieve satisfaction through that channel, then you have a legitimate gripe. Joe Joe Luchtenberg Dataline, Inc. Email: joe.luchtenberg(a)data-line.com Phone: 757-457-0504 (direct line) 757-858-0600 (front desk) 757-285-1223 (mobile) Fax: 757-858-0606 Please visit us at www.data-line.com > -----Original Message----- > From: Frank Bonnet [mailto:bonnetf@bart.esiee.fr] > Sent: Tuesday, January 29, 2002 5:48 AM > To: toasters(a)mathworks.com > Subject: LDAP auth (2) > > > Hi > > I posted a request yesterday about the LDAP auth > support by Ontap . > > I received very few answers ( thanks to those that respond ) > > I received NO answers from NetApp folks that are usually > very reactives. > > When we bought our F85 filer last year people at NetApp France > said LDAP will be supported soon by Ontap. > > THAT IS WHY we bought this filer as we are migrating > ALL of our authentication process to LDAP ( NOT MS Active Directory ) > for all of our workstations clients. > > As many high educationnal sites we have many mixed environnement > computers , HP-UX, Linux, windows9x/2000/NT, FreeBSD, Solaris ... > we need to centralize authetication to LDAP to have an unique > and centralized auth process for all computers. > > Unfortunately Ontap for now doesn't support LDAP auth and I am stuck > as our filer will centralize all users data ... > > This happen BY THE FAULT of NetApp people who said Ontap WILL support > LDAP auth soon ... > > What am I supposed to do NOW ????? > > -- > Frank Bonnet >

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Re: NDMP tape reader
by MCope＠isisph.com 28 Jan '02

28 Jan '02

Matt, I'm a Legato NDMP user and would also be interested in what you find for this mysterious "vendor supplied tape reader" I've been able to recover files from tapes that have exceeded their browse and retention policy by doing a Save Set Recover. This may have been an exception because the media was still in the media database (but recyclable) and save set information was still in the index. I was surprised this worked because I was under the impression that once the retention period was exceeded that the index entries got cleaned out - they did for files but not save set info. Michael Cope Unix Systems Administrator Isis Pharmaceuticals mcope(a)isisph.com

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Re: NDMP tape reader
by mds＠gbnet.net 28 Jan '02

28 Jan '02

Perhaps I'm being obtuse, but isn't the on-tape format of an NDMP backup the same as the native backup stream of the device being backed-up? I'd have though the tapes could still be understood, therefore, by the NetApp restore command. Maybe I've been away from all this stuff too long.. On Mon 28 Jan, 2002, Matt Musgrove <matt.musgrove(a)thales-is.com> wrote: > Hello, > > I hope someone can help me with the following issue. I am not able to recover > files beyond my browse policy because the Legato docs say that I cannot use > "scanner" but must use a special tape reader provided by my NDMP vendor. > However, NetApp have not been able to help so far. > > I quote from the Legato UNIX documentation on p.475 > "The scanner command generates media database entries only for the data backed > up with NDMP. You cannot recover data with the scanner utillity or regenerate > the file index information. Instead you must use special tape readers provided > by your NDMP vendor" > > Setup: > Networker 6.1.1 installed on Solaris 8 backing up a Network Appliance filer > F820, Ontap 6.1.1R2. Tape library directly connected to the NetApp using NDMP > > Question: > Does anyone have this special tape reader or know where I can download it? > > many thanks > > Matt Musgrove > >-- End of excerpt from Matt Musgrove -- -Mark ... an Englishman in London ...

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LDAP auth ?
by Frank Bonnet 28 Jan '02

28 Jan '02

Hi Does anybody knows when Ontap will support native LDAP auth mechanism ? I don't speak about M$ Active directory stuff but about OpenLDAP support. Thanks a lot. -- Frank Bonnet

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NDMP tape reader
by Matt Musgrove 28 Jan '02

28 Jan '02

Hello, I hope someone can help me with the following issue. I am not able to recover files beyond my browse policy because the Legato docs say that I cannot use "scanner" but must use a special tape reader provided by my NDMP vendor. However, NetApp have not been able to help so far. I quote from the Legato UNIX documentation on p.475 "The scanner command generates media database entries only for the data backed up with NDMP. You cannot recover data with the scanner utillity or regenerate the file index information. Instead you must use special tape readers provided by your NDMP vendor" Setup: Networker 6.1.1 installed on Solaris 8 backing up a Network Appliance filer F820, Ontap 6.1.1R2. Tape library directly connected to the NetApp using NDMP Question: Does anyone have this special tape reader or know where I can download it? many thanks Matt Musgrove

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Home user with a 330 and 520 filer ...
by yadda＠yadda.castle.net 27 Jan '02

27 Jan '02

Hi, I purchased a 330 and a 520 filer w/ pretty nice configs (~150gig available). Problem though is that no software is loaded on either NetApp. Ive been checking the now.netapp.com site but no freely downloadable software for these older NetApps. Im wondering if there is any software that I can use for home use that is free (in terms of price)? I see there are versions for different protocols and such..Im looking for a NFS version that I can use(I dont use Windows so no CFIS is needed). So, any hope for me? Thanks.

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max path length under ntfs on filer
by neil lehrer 25 Jan '02

25 Jan '02

wee are converting from nfs/unix to cifs/ntfs on filer. some of our path lengths exceed the windows limit of 260[?]. i expect the filer won't care, but maybe the client sw will. has anybody had experience with this? thanks --

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RE: max path length under ntfs on filer
by Joe Luchtenberg 25 Jan '02

25 Jan '02

Seems there was a thread that touched on this not long ago. I think the limit was actually 256 characters, and I believe it does apply. Will have to go back to check, though. Joe > -----Original Message----- > From: neil lehrer [mailto:nlehrer@ibb.gov] > Sent: Friday, January 25, 2002 3:21 PM > To: toasters > Subject: max path length under ntfs on filer > > > wee are converting from nfs/unix to cifs/ntfs on filer. some > of our path > lengths exceed the windows limit of 260[?]. i expect the > filer won't care, but > maybe the client sw will. > > has anybody had experience with this? > > thanks > -- >

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Re: NetShield scanner can't register
by Seth Moskowitz 25 Jan '02

25 Jan '02

Paul, I use Carrierscan but I recall that I did the following... Created an account in the domain for the virus scanning product (carrierscan in my case) to use. I placed that accound in Domain Users and Backup Operators in the domain. In addition I had to put the domain account in the local Backup Operators group on the Filer itself. With that I was able to enable vscan, start and stop the services on the scanning box and the Filer recognized the scanner and registered without a problem. Not sure if that will help but using the carrierscan product it was that simple. >From: Paul Autore <paul.autore(a)motorola.com> >To: Maillist NetApps <toasters(a)mathworks.com> >Subject: NetShield scanner can't register >Date: Thu, 24 Jan 2002 13:51:06 -0700 > >VSCAN Gurus, > >My F720 filer (6.1.1R2) is showing the following message: >"Virus scanner "IP-address" attempted to register but had insufficient >privilege." >Since I don't have any registered scanners, I still have left vscan off. > >My scanner is a Dell box running 2000 Advanced Server. I have McAFee >NetShield 4.5 for NT and 2000 installed, along with Service Pack 1 that >comes on the NetShield 4.5 for NetApps demo CD. On top of this, I have >NetShield for NetApps installed. My scanner is on the same NT resource >domain as the filer. The scanning account has membership in both the >Domain Admins and Backup Operators groups on this domain's PDC. >The Properties window of the NetShield for NetApps console confirms that >the AV is running, and that the filer that I'm trying to connect to >displays "filer error" (confirming the filer's error message). > >The results of a "wcc -s mesascan" on the filer confirm that my scanning >account "mesascan" has the following memberships: >(NT - UNIX) account name(s): (AZ34STITG\mesascan - root) > *************** > UNIX uid = 0 > user is a member of group sys (3) > user is a member of group http (77) > user is a member of group smos (165) > user is a member of group hp4156 (142) > user is a member of group cnagrp (160) > > NT membership > AZ34STITG\mesascan > AZ34STITG\Domain Users > AZ34STITG\Domain Admins > BUILTIN\Users > BUILTIN\Administrators > User is also a member of Everyone, Network Users, > Authenticated Users > *************** >What is preventing my scanner from getting registered on my filer? The >McAFee support people and NetApps have been unable to solve this. My >current NetApps case is #298355. > >Paul Autore >Systems Engineer >Motorola _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

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RE: Whos got that file?
by Ricky Chawla 25 Jan '02

25 Jan '02

Run : cifs sessions \* Ricky -----Original Message----- From: Clawson, Simon [mailto:simon_clawson@mentorg.com] Sent: Friday, January 25, 2002 9:35 AM To: 'toasters(a)mathworks.com' Subject: Whos got that file? Hi! With CIFS Sessions I can see who's got a CIFS seesion open, but is there a way of seeing what file or path they are using? Simon Simon Clawson HDS Team Systems Administrator Mentor Graphics Uk Rivergate London Road Newbury Berkshire RG14 2QB <<Clawson, Simon.vcf>>

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RE: Whos got that file?
by Clawson, Simon 25 Jan '02

25 Jan '02

Many thanks Simon > -----Original Message----- > From: Sam Schorr [mailto:sschorr@homestead-inc.com] > Sent: Friday January 2002 15:41 > To: Clawson, Simon; toasters(a)mathworks.com > Subject: RE: Whos got that file? > > > Yes. The command "CIFS sessions" returns the list of clients and the > number of files they have open. The command "CIFS sessions > clientname" > returns the full file path on the filer that clientname has > open and the > kind of open. > > --sam > > > -----Original Message----- > From: Clawson, Simon [mailto:simon_clawson@mentorg.com] > Sent: Friday, January 25, 2002 6:35 AM > To: 'toasters(a)mathworks.com' > Subject: Whos got that file? > > > Hi! > > With CIFS Sessions I can see who's got a CIFS seesion open, > but is there > a way of seeing what file or path they are using? > > Simon > > Simon Clawson > HDS Team Systems Administrator > Mentor Graphics Uk > Rivergate > London Road > Newbury > Berkshire > RG14 2QB > <<Clawson, Simon.vcf>> >

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RE: Whos got that file?
by Sam Schorr 25 Jan '02

25 Jan '02

Yes. The command "CIFS sessions" returns the list of clients and the number of files they have open. The command "CIFS sessions clientname" returns the full file path on the filer that clientname has open and the kind of open. --sam -----Original Message----- From: Clawson, Simon [mailto:simon_clawson@mentorg.com] Sent: Friday, January 25, 2002 6:35 AM To: 'toasters(a)mathworks.com' Subject: Whos got that file? Hi! With CIFS Sessions I can see who's got a CIFS seesion open, but is there a way of seeing what file or path they are using? Simon Simon Clawson HDS Team Systems Administrator Mentor Graphics Uk Rivergate London Road Newbury Berkshire RG14 2QB <<Clawson, Simon.vcf>>

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Whos got that file?
by Clawson, Simon 25 Jan '02

25 Jan '02

Hi! With CIFS Sessions I can see who's got a CIFS seesion open, but is there a way of seeing what file or path they are using? Simon Simon Clawson HDS Team Systems Administrator Mentor Graphics Uk Rivergate London Road Newbury Berkshire RG14 2QB <<Clawson, Simon.vcf>>

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NetShield scanner can't register
by Paul Autore 24 Jan '02

24 Jan '02

VSCAN Gurus, My F720 filer (6.1.1R2) is showing the following message: "Virus scanner "IP-address" attempted to register but had insufficient privilege." Since I don't have any registered scanners, I still have left vscan off. My scanner is a Dell box running 2000 Advanced Server. I have McAFee NetShield 4.5 for NT and 2000 installed, along with Service Pack 1 that comes on the NetShield 4.5 for NetApps demo CD. On top of this, I have NetShield for NetApps installed. My scanner is on the same NT resource domain as the filer. The scanning account has membership in both the Domain Admins and Backup Operators groups on this domain's PDC. The Properties window of the NetShield for NetApps console confirms that the AV is running, and that the filer that I'm trying to connect to displays "filer error" (confirming the filer's error message). The results of a "wcc -s mesascan" on the filer confirm that my scanning account "mesascan" has the following memberships: (NT - UNIX) account name(s): (AZ34STITG\mesascan - root) *************** UNIX uid = 0 user is a member of group sys (3) user is a member of group http (77) user is a member of group smos (165) user is a member of group hp4156 (142) user is a member of group cnagrp (160) NT membership AZ34STITG\mesascan AZ34STITG\Domain Users AZ34STITG\Domain Admins BUILTIN\Users BUILTIN\Administrators User is also a member of Everyone, Network Users, Authenticated Users *************** What is preventing my scanner from getting registered on my filer? The McAFee support people and NetApps have been unable to solve this. My current NetApps case is #298355. Paul Autore Systems Engineer Motorola

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Not superstitious, but fun !
by Kate 24 Jan '02

24 Jan '02

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Gigabit ethernet performance
by Hsueh-Mei Tsai(May Tsai) 24 Jan '02

24 Jan '02

Does anybody knows what kind of performance I can expect from using the Gigabit ethernet on Solaris/NetApp? For example, if mkfile 1024m 1gbfile on a NFS mounted netapp volume thru the gbit interface, how many seconds of response time is considered to be reasonable? I'm getting about 30secs, while I'm hoping within 12secs, am I dreaming? Thanks, -May --

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unix style to ntfs and back
by neil lehrer 24 Jan '02

24 Jan '02

hi, i have a question about security style reversion. we converted a unix qtree to ntfs and applied acls. there was a problem and i had to revert back to the unix style almost immediately after creating the acls. now i want to convert the same qtree to ntfs again. the question is will the acls that i originally put in place still be there after i convert to ntfs? the unix perms were there when i went ntfs back to unix, but it may not be the same going from unix to ntfs. anybody ever seen or done this? ontap 6.1.1r2 thanks. -- regards

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"Open files" in NetApp shapshots
by Joseph Foy 23 Jan '02

23 Jan '02

I am running a Network Appliance Filer and using CA ARCserve to backup files on a Windows 2000 network. All file access is working fine, and ARCserve seems to be backing up files on all other Windows systems OK. My problem is that ARCserve keeps reporting skipping (some)open or locked files even though I am backing up a snapshot (usually the last hourly.0 snapshot). Any thoughts on why ~snapshot\hourly.0 isn't acting as a read-only filesystem? Joseph Foy/Sys Admin/World Wide Packets/Beaverton Oregon

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RE: Gigabit ethernet performance
by Surlow, Jim 23 Jan '02

23 Jan '02

May, One course I took at USENIX over a year ago, there was a comment from the system & network tuning course that said that it would take 3 CPUs (Sparc 300MHz) to saturate a GBIC. This was an unverified rule of thumb at the time. (I went back to my notes to dig this up). These days, you would have faster buses and faster CPUs, so adjust the number downward accordingly. In the case of the mkfile that process is going to be designated to a single CPU. Just for fun, you might want to fire up 4 simultaneous 256m (both to tmp & to your filer) to see if you see performance differences. That way, you would be able to isolate some of the time to the limitations of your NFS client. The back-to-back CPs are going to be in your sysstat output (use 1 sec updates for longer that 10 seconds). And that will identify time that the filer is spending on disk I/O. If you are getting back-to-back CPs, then your filer's NVRAM cache is filling faster than it can flush to disk. So, the filer makes the data stream wait. If you were to run the same single processor mkfile test with less data, you should see time to tmp would be proportional and if your time to filer is less than the earlier filer ratio (time/disk), then that might also show that it is a lack of NVRAM cache. Jim -----Original Message----- From: Hsueh-Mei Tsai(May Tsai) [mailto:may-tsai@ti.com] Sent: Tuesday, January 22, 2002 12:38 PM To: toasters(a)mathworks.com Subject: Re: Gigabit ethernet performance Thanks for all the replies. Some background info: Sun client is a 420R running Solaris7, NetApp is F820 running 6.1.1R2. Both are PCI cards. I've checked the NOW sites and tried to change various Sun parameters with no significant differences. Local disk creation takes 35 secs(single drive) vs. NetApp's 7 data/1 parity volume, which produces ~30secs results. Direct tmpfs writes takes 8 secs. Aggregated results in 27.5 seconds, still not much better though. The NetApp support engineer I worked with mentioned it's back-to-back CP bottleneck, that's not on the network side, correct? Does that mean the Netapp F820 can't handle consistent huge data flows? As to Jumbo frame, I haven't tried it yet, the Gbit switch I use probably won't support it, well. Does it adds a lot to the performance? May

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