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13520 discussions

Adding VLANs to a vif
by Wes Hardin 13 Jul '07

13 Jul '07

I have a FAS3020 with all four onboard gig-e ports trunked as vif0. I am wanting to add a VLAN interface to my current vif for my backup network. Will the following lines in /etc/rc work? (Sorry for the wrapping) vif create multi vif0 -b ip e0a e0c e0b e0d vlan create -g off vif0 4093 ifconfig vif0 `hostname`-vif0 mediatype auto netmask 255.255.248.0 partner vif0 ifconfig vif0-4093 `hostname`-backup netmask 255.255.0.0 partner vif0-4093 I still want vif0 to act as it does now, sending and receiving untagged frames, but the new interface, vif0-4093, sending tagged frames. I tried to simulate this with the ONTAP simulator, but it wasn't supported on my setup and all the documentation I can find doesn't mention the original interface again after creating the VLAN. Thanks, -- /* wes hardin */ UNIX System Admin Dallas Semiconductor/Maxim Integrated Products

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ndmpcopy failure "RESTORE: File creation failed"
by Paul Letta 13 Jul '07

13 Jul '07

Hello, I have a new filer running 7.2.2. I am using ndmpcopy from the command line of the new filer to copy a directory (not a whole volume) from an old filer running 7.1.1.1. Many of the directories I am moving are fine, but at least one (so far) has produced some errors while the ndmpcopy was running: Ndmpcopy: cfs1: Log: RESTORE: File creation failed: ...(258720) The ndmpcopy runs and finishes without error. The ndmpdcopy of one of these directories had 179 of these failures. Ndmpcopy: old: Log: DUMP: 124480831 KB Ndmpcopy: new: Log: RESTORE: RESTORE IS DONE Ndmpcopy: new:newcfs1: Notify: restore successful Ndmpcopy: old: Log: DUMP: DUMP IS DONE Ndmpcopy: old: Log: DUMP: Deleting "/vol/vol1/../snapshot_for_backup.234" snapshot. I then turned on ndmpd debug to 70 and ran it again. This time each of the failed files had a similar segment of errors like this: Jul 11 15:56:09 EDT [ndmpd:10]: Message NDMP_LOG_MESSAGE sent Jul 11 15:56:09 EDT [ndmpd:10]: Message Header: Jul 11 15:56:09 EDT [ndmpd:10]: Sequence 22 Jul 11 15:56:09 EDT [ndmpd:10]: Timestamp 1184183769 Jul 11 15:56:09 EDT [ndmpd:10]: Msgtype 0 Jul 11 15:56:09 EDT [ndmpd:10]: Method 1539 Jul 11 15:56:09 EDT [ndmpd:10]: ReplySequence 0 Jul 11 15:56:09 EDT [ndmpd:10]: Error NDMP_NO_ERR Jul 11 15:56:09 EDT [ndmpd:10]: Log type: 0 Jul 11 15:56:09 EDT [ndmpd:10]: Message id: 0 Jul 11 15:56:09 EDT [ndmpd:10]: Log message: RESTORE: File creation failed: ...(258729) Ndmpcopy: new: Log: RESTORE: File creation failed: ...(258729) The new filer is empty and the destination volume is a big flexvol. The source directory (qtree) is in a traditional volume. I have opened a case, but nothing back yet. Anyone ever see this before ? Thanks, Paul

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RE: ndmpcopy failure "RESTORE: File creation failed"
by Kenneth Heal 12 Jul '07

12 Jul '07

HiI vaguely recall seeing something similar and in that case there was an inconsistent inode in the source directory. It is therefore probably worth doing a wafliron on the source directory:filer>priv set advancedfiler*>vol wafliron start volnamefiler*>priv setfiler>cheersKenneth HealStorage ConsultantSenet Eindhoven bv> Date: Thu, 12 Jul 2007 16:34:13 -0400> From: letta(a)jlab.org> To: toasters(a)mathworks.com> Subject: ndmpcopy failure "RESTORE: File creation failed"> > Hello,> I have a new filer running 7.2.2. I am using ndmpcopy from the > command line of the new filer to copy a directory (not a whole volume) > from an old filer running 7.1.1.1. Many of the directories I am moving > are fine, but at least one (so far) has produced some errors while the > ndmpcopy was running:> > > Ndmpcopy: cfs1: Log: RESTORE: File creation failed: ...(258720)> > The ndmpcopy runs and finishes without error. The ndmpdcopy of one of > these directories had 179 of these failures.> > Ndmpcopy: old: Log: DUMP: 124480831 KB> Ndmpcopy: new: Log: RESTORE: RESTORE IS DONE> Ndmpcopy: new:newcfs1: Notify: restore successful> Ndmpcopy: old: Log: DUMP: DUMP IS DONE> Ndmpcopy: old: Log: DUMP: Deleting > "/vol/vol1/../snapshot_for_backup.234" snapshot.> > > I then turned on ndmpd debug to 70 and ran it again. This time each of > the failed files had a similar segment of errors like this:> > Jul 11 15:56:09 EDT [ndmpd:10]: Message NDMP_LOG_MESSAGE sent> Jul 11 15:56:09 EDT [ndmpd:10]: Message Header:> Jul 11 15:56:09 EDT [ndmpd:10]: Sequence 22> Jul 11 15:56:09 EDT [ndmpd:10]: Timestamp 1184183769> Jul 11 15:56:09 EDT [ndmpd:10]: Msgtype 0> Jul 11 15:56:09 EDT [ndmpd:10]: Method 1539> Jul 11 15:56:09 EDT [ndmpd:10]: ReplySequence 0> Jul 11 15:56:09 EDT [ndmpd:10]: Error NDMP_NO_ERR> Jul 11 15:56:09 EDT [ndmpd:10]: Log type: 0> Jul 11 15:56:09 EDT [ndmpd:10]: Message id: 0> Jul 11 15:56:09 EDT [ndmpd:10]: Log message: RESTORE: File creation > failed: ...(258729)> Ndmpcopy: new: Log: RESTORE: File creation failed: ...(258729)> > The new filer is empty and the destination volume is a big flexvol. The > source directory (qtree) is in a traditional volume.> > > I have opened a case, but nothing back yet. Anyone ever see this before ?> > Thanks,> Paul _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

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RE: List still active?
by Glenn Walker 12 Jul '07

12 Jul '07

We're looking at going the ESX route as well. The NFS route is thin-provisioned, as you said, which is attractive. Keeping the snapshot capabilities for LUNs by adding space reservations is safer, but costly. Quite frankly, thin provisioning the space res for LUNs is attractive if your organization is pro-active, but that isn't the case where I'm at: too dangerous and asking for danger. That said, you won't get quite the same latency\throughput with NFS as with iSCSI or especially FCP. Glenn -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Glenn Dekhayser Sent: Wednesday, July 11, 2007 9:55 AM To: Davies,Matt; Scott Lowe; Forest Leonard; toasters(a)mathworks.com Subject: RE: List still active? Advantages IMHO 1) VMDKs on NFS are by default THIN-Provisioned; 2) Throughput is about equal 3) NFS is a heck of a lot easier to administer 4) There's 3x longer history and knowledgebase on NFS network t-shooting. Dis-Advantages: 1) You can do a QLogic iSCSI card to offload CPU processing of packets; 2) In a big environment you can use iSNS; 3) You can be much more granular with masking/etc (although I can imagine you can be creative with NFS) 4) NFS is stateless (v2), to be run fastest you use UDP; so to make it reliable it gets a little slower (but still not a real biggie) Anyone else? Glenn @ VOyant > -----Original Message----- > From: owner-toasters(a)mathworks.com [mailto:owner- > toasters(a)mathworks.com] On Behalf Of Davies,Matt > Sent: Wednesday, July 11, 2007 9:35 AM > To: Scott Lowe; Forest Leonard; toasters(a)mathworks.com > Subject: RE: List still active? > > Scott, > > Any chance you could expand on the advantages of NFS over Iscsi ? NFS > isn't an area I have any experience of.... > > Cheers > > Matt > > -----Original Message----- > From: owner-toasters(a)mathworks.com [mailto:owner- > toasters(a)mathworks.com] > On Behalf Of Scott Lowe > Sent: 11 July 2007 14:05 > To: Forest Leonard; toasters(a)mathworks.com > Subject: Re: List still active? > > Forest, > > When it comes time to configure VMkernel for VMotion, then I'd > definitely recommend keeping it separate from the virtual machine > network. As it stands right now, you don't even need a VMkernel NIC > configured because it sounds like you are using Qlogic iSCSI HBAs and > only have a single ESX Server. Since the Qlogic cards handle the > iSCSI traffic and there is no VMotion, there no current need for a > VMkernel NIC (unless you want to use NFS from the FAS to provide > additional storage for VMs--which, by the way, works pretty well and > has some nice advantages over iSCSI, IMHO). > > Regards, > Scott Lowe > ePlus Technology, Inc. > slowe(a)eplus.com > > > > On Jul 11, 2007, at 8:33 AM, Forest Leonard wrote: > > > Interesting stuff. I only have one ESX server so I haven't gotten > > to the > > Vmotion configuration yet.. That should be later this year. > > > > I just configured a RDM to run a Virtual server on. I found an > article > > where you want to create the type as NTFS if it is a RDM for a > windows > > host. Not sure if I am going to use this going forward. I actually > > don't > > know if you can migrate into a RDM. It doesn't look like it. > > > > I am only using 2 NIC's on my Vmware server.. and a QLOGIC card for > my > > ISCSI access.. I may need to look at bulking up my NIC > > configuration. It > > looks like I may gain some performance if I separate my VMKernal > > from my > > Virtual Machine network? > > > > Thanks, > > Forest > > > > -----Original Message----- > > From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] > > Sent: Wednesday, July 11, 2007 8:18 AM > > To: Forest Leonard; ggwalker(a)mindspring.com; toasters(a)mathworks.com > > Subject: RE: List still active? > > > > Sounds like we are both at the same stage. > > > > We are not using RDM's yet, however when it comes to exchange we will > > have to, or I may just stick with using the Microsoft Iscsi > > initiatator > > from within the VM, not exactly supported, but I know of other people > > doing it. > > > > We have migrated 8 machines so far, into just one datastore and > > have not > > seen any performance problems at all, although most of the machines > > have > > very low IO requirements. > > > > We are using a script to snapshot and then replicate using > snapmirror, > > it works very well, however our Virtual Centre server is also a VM > > which > > was causing a few problems with the snapshots on the VMware side not > > being removed, but moving this to a separate datastore seems have > > cured > > the problems, even SQL doesn't seem to have a problem. > > > > The script is the one written by Evan Battle, that is in the newest > > netapp docs on VMware. I did have a few problems with ssh to the > > filer, > > but we are now using rsh and it seems to be ok. > > > > I don't know how you have setup your virtual switches on the ESX > side, > > but I got some best practice information out of VMware on that > > subject. > > > > Each of our ESX IBM3550 host servers have 6 Nics, connected as > > follows. > > > > 2 Nics for service console VMKernel for Vmotion, load balance using > > Virtual port ID > > > > 2 Nics for Virtual Machine network, load balance using Virtual port > ID > > > > 2 Nics for ISCSI (Service Console and VMKernel), load balance using > IP > > Hash > > > > Hope this helps.... > > > > > > > > > > > > > > > > > > > > -----Original Message----- > > From: Forest Leonard [mailto:fleonard@rvigroup.com] > > Sent: 11 July 2007 11:06 > > To: Davies,Matt; ggwalker(a)mindspring.com; toasters(a)mathworks.com > > Subject: RE: List still active? > > > > Hey Matt... I am actually doing the exact same thing on a FAS 270.. I > > have migrated about 7 servers so far. > > > > Are you using RDM's (remote device mappings) for the Virtual > > Machines? I > > actually just created 2 200GB LUNs on the netapp to use as Datastores > > and have not had any performance issues. > > > > Just wondering what your experience with RDM's are.. I added one > > into a > > virtual machine.. It just lets you map a LUN directly to a Virtual > > machine. > > > > Has anyone out there used the netapp script to capture a VM snapshot? > > > > Thanks, > > Forest > > > > ________________________________ > > > > From: owner-toasters(a)mathworks.com on behalf of Davies,Matt > > Sent: Wed 7/11/2007 1:00 AM > > To: ggwalker(a)mindspring.com; toasters(a)mathworks.com > > Subject: RE: List still active? > > > > > > > > Still working by the looks of things. > > > > busy in process of migrating all our physical severs to VM, stored > > on a > > iscsi lun on a FAS 270. > > > > For those that want to know we are using the software iscsi initiator > > within ESX and have not had any problems so far. > > > > cheers > > > > matt > > > > -----Original Message----- > > From: owner-toasters(a)mathworks.com <owner-toasters(a)mathworks.com> > > To: toasters(a)mathworks.com <toasters(a)mathworks.com> > > Sent: Wed Jul 11 01:03:49 2007 > > Subject: List still active? > > > > I've noticed that I'm still subscribed, but have received no email > > since > > July 4th. Everyone didn't trade their NetApp gear for something else > > while I was out of town did they?? J > > > > > > > > _____________________________________________________________ > > 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 <mailto:help@generalatlantic.com>. Thank > You. > > > > > > > > > ###################################################################### > > > ## > > ############# > > Note: > > If you have received this message in error, please notify the > original > > sender immediately by telephone (203)975-2100 or by return e-mail, > and > > delete the message, along with any attachments from your computer. > If > > you have received this message in error, you are hereby notified that > > any dissemination, distribution or copying of this e-mail, and any > > attachments thereto, is strictly prohibited.This note is also to > > notify > > the recipient of this email that it has been scanned for all known > > viruses and attacking techniques. Thank you. http://www.rvigroup.com > > > ###################################################################### > > > ## > > ############# > > > > > ###################################################################### > > > ############### > > Note: > > If you have received this message in error, please notify the > > original sender immediately by telephone (203)975-2100 or by return > > e-mail, and delete the message, along with any attachments from > > your computer. If you have received this message in error, you are > > hereby notified that any dissemination, distribution or copying of > > this e-mail, and any attachments thereto, is strictly > > prohibited.This note is also to notify the recipient of this email > > that it has been scanned for all known viruses and attacking > > techniques. Thank you. http://www.rvigroup.com > > > ###################################################################### > > > ############### > > > > >

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LUN Snapshots
by Robert Lazzurs 12 Jul '07

12 Jul '07

Hello, I was wondering if anyone is aware of a way to have a NetApp do snapshots of just one LUN within a volume, if not possibly one qtree within a volume. The reason I ask is to provide a service where customers can have their iSCSI LUN and then backup that iSCSI LUN with a snapshot, however as I am going to have 100's of LUN's (well 1000's tbh, but this will be over many storage heads from the looks of things) I cannot assign a volume to each LUN. If there is not a way to get a NetApp to provide these facilities then if someone has any recommendations on storage systems I should look at that would be great :) (PS I love NetApp, please don't say I have to switch!!!) Thanks.

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RE: List still active?
by Davies,Matt 12 Jul '07

12 Jul '07

Still working by the looks of things. busy in process of migrating all our physical severs to VM, stored on a iscsi lun on a FAS 270. For those that want to know we are using the software iscsi initiator within ESX and have not had any problems so far. cheers matt -----Original Message----- From: owner-toasters(a)mathworks.com <owner-toasters(a)mathworks.com> To: toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Wed Jul 11 01:03:49 2007 Subject: List still active? I’ve noticed that I’m still subscribed, but have received no email since July 4th. Everyone didn’t trade their NetApp gear for something else while I was out of town did they?? J _____________________________________________________________ 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 <mailto:help@generalatlantic.com>. Thank You.

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RE: NFS vs. iSCSI for VMware (was "Re: List still active?")
by Glenn Dekhayser 12 Jul '07

12 Jul '07

Vaughn: > NetApp covers this technology in their VMware Storage Best Practices > paper, TR3428. You're way too modest....you WROTE that TR...... :) Glenn @ Voyant > -----Original Message----- > From: owner-toasters(a)mathworks.com [mailto:owner- > toasters(a)mathworks.com] On Behalf Of M. Vaughn Stewart > Sent: Wednesday, July 11, 2007 10:53 PM > To: Scott Lowe > Cc: Davies,Matt; toasters(a)mathworks.com > Subject: Re: NFS vs. iSCSI for VMware (was "Re: List still active?") > > Scott, > > Your comments on the 2x the space for a NetApp is LUN is a bit > misleading and is out of date. > > NetApp LUNs do NOT require any additional space. i.e. 50gbs = 50gbs > > If you want to take a snapshot of that LUN you had to ensure that you > had additional capacity in case the volume became full in which case > the > snapshot function would be disabled until manual intervention deleted > old snapshots. In this design NetApp did not defferentiate the value > of > production data and snapshot data, so a requirement of a reserve > equaling 100% of the LUN size was required. i.e. 50gb = 50gb + 50 gb + > snapshot space. > > This design seemed inefficient when compared to snap reserves with NAS > data, but when compared to other SAN vendors and their n disk backup > mechanisms, it was extremely space efficient. I wont go into details > here but to say that enterprise class on disk backups with traditional > arrays require 100% overhead for each individual backup. > > Today NetApp offers a means where one can say production data is more > valuable than snapshots. They provide two dynamic space management > policies, auto vol grow and auto snapshot delete. With these two > policies you can eliminate any additional LUN overhead and should a > volume run out of space the appropriate policy will be enforced and > will > ensure that production data remains online. Now 50GB with snapshots = > 50GB + snapshot space only! > > NetApp covers this technology in their VMware Storage Best Practices > paper, TR3428. > > Vaughn > > > Scott Lowe wrote: > > The #1 complaint I have about using iSCSI relates to how LUNs are > > handled in the NetApp world: > > > > 1. You have to (by default) allocate 2x + deltas for LUNs. For a > > 100GB LUN, you'd need 240GB of space (by default--I know there are > > workarounds with ONTAP 7.2 and later). With an NFS mount (which is > > nothing more than exporting a FlexVol), you only need to account for > > the 20% Snapshot reserve. > > > > 2. You can't resize iSCSI LUNs. With NFS on a FlexVol, you can > > resize to your heart's content because WAFL is controlling the > > filesystem--not the host. > > > > 3. It's open, meaning that your VMDKs aren't locked into the > > proprietary VMFS file system. This could potentially simplify > backups > > and restores. > > > > As Glenn @ Voyant already mentioned, you also gain thin provisioned > > disks by default and more knowledge/history/experience with NFS than > > with iSCSI. > > > > Thanks, > > Scott Lowe > > ePlus Technology, Inc. > > slowe(a)eplus.com > > > > > > > > On Jul 11, 2007, at 9:34 AM, Davies,Matt wrote: > > > >> Scott, > >> > >> Any chance you could expand on the advantages of NFS over Iscsi ? > NFS > >> isn't an area I have any experience of.... > >> > >> Cheers > >> > >> Matt > >> > >> -----Original Message----- > >> From: owner-toasters(a)mathworks.com [mailto:owner- > toasters(a)mathworks.com] > >> On Behalf Of Scott Lowe > >> Sent: 11 July 2007 14:05 > >> To: Forest Leonard; toasters(a)mathworks.com > >> Subject: Re: List still active? > >> > >> Forest, > >> > >> When it comes time to configure VMkernel for VMotion, then I'd > >> definitely recommend keeping it separate from the virtual machine > >> network. As it stands right now, you don't even need a VMkernel NIC > >> configured because it sounds like you are using Qlogic iSCSI HBAs > and > >> only have a single ESX Server. Since the Qlogic cards handle the > >> iSCSI traffic and there is no VMotion, there no current need for a > >> VMkernel NIC (unless you want to use NFS from the FAS to provide > >> additional storage for VMs--which, by the way, works pretty well and > >> has some nice advantages over iSCSI, IMHO). > >> > >> Regards, > >> Scott Lowe > >> ePlus Technology, Inc. > >> slowe(a)eplus.com > >> > >> > >> > >> On Jul 11, 2007, at 8:33 AM, Forest Leonard wrote: > >> > >>> Interesting stuff. I only have one ESX server so I haven't gotten > >>> to the > >>> Vmotion configuration yet.. That should be later this year. > >>> > >>> I just configured a RDM to run a Virtual server on. I found an > article > >>> where you want to create the type as NTFS if it is a RDM for a > windows > >>> host. Not sure if I am going to use this going forward. I actually > >>> don't > >>> know if you can migrate into a RDM. It doesn't look like it. > >>> > >>> I am only using 2 NIC's on my Vmware server.. and a QLOGIC card for > my > >>> ISCSI access.. I may need to look at bulking up my NIC > >>> configuration. It > >>> looks like I may gain some performance if I separate my VMKernal > >>> from my > >>> Virtual Machine network? > >>> > >>> Thanks, > >>> Forest > >>> > >>> -----Original Message----- > >>> From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] > >>> Sent: Wednesday, July 11, 2007 8:18 AM > >>> To: Forest Leonard; ggwalker(a)mindspring.com; toasters(a)mathworks.com > >>> Subject: RE: List still active? > >>> > >>> Sounds like we are both at the same stage. > >>> > >>> We are not using RDM's yet, however when it comes to exchange we > will > >>> have to, or I may just stick with using the Microsoft Iscsi > >>> initiatator > >>> from within the VM, not exactly supported, but I know of other > people > >>> doing it. > >>> > >>> We have migrated 8 machines so far, into just one datastore and > >>> have not > >>> seen any performance problems at all, although most of the machines > >>> have > >>> very low IO requirements. > >>> > >>> We are using a script to snapshot and then replicate using > snapmirror, > >>> it works very well, however our Virtual Centre server is also a VM > >>> which > >>> was causing a few problems with the snapshots on the VMware side > not > >>> being removed, but moving this to a separate datastore seems have > >>> cured > >>> the problems, even SQL doesn't seem to have a problem. > >>> > >>> The script is the one written by Evan Battle, that is in the newest > >>> netapp docs on VMware. I did have a few problems with ssh to the > >>> filer, > >>> but we are now using rsh and it seems to be ok. > >>> > >>> I don't know how you have setup your virtual switches on the ESX > side, > >>> but I got some best practice information out of VMware on that > >>> subject. > >>> > >>> Each of our ESX IBM3550 host servers have 6 Nics, connected as > >>> follows. > >>> > >>> 2 Nics for service console VMKernel for Vmotion, load balance using > >>> Virtual port ID > >>> > >>> 2 Nics for Virtual Machine network, load balance using Virtual port > ID > >>> > >>> 2 Nics for ISCSI (Service Console and VMKernel), load balance using > IP > >>> Hash > >>> > >>> Hope this helps.... > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> -----Original Message----- > >>> From: Forest Leonard [mailto:fleonard@rvigroup.com] > >>> Sent: 11 July 2007 11:06 > >>> To: Davies,Matt; ggwalker(a)mindspring.com; toasters(a)mathworks.com > >>> Subject: RE: List still active? > >>> > >>> Hey Matt... I am actually doing the exact same thing on a FAS 270.. > I > >>> have migrated about 7 servers so far. > >>> > >>> Are you using RDM's (remote device mappings) for the Virtual > >>> Machines? I > >>> actually just created 2 200GB LUNs on the netapp to use as > Datastores > >>> and have not had any performance issues. > >>> > >>> Just wondering what your experience with RDM's are.. I added one > >>> into a > >>> virtual machine.. It just lets you map a LUN directly to a Virtual > >>> machine. > >>> > >>> Has anyone out there used the netapp script to capture a VM > snapshot? > >>> > >>> Thanks, > >>> Forest > >>> > >>> ________________________________ > >>> > >>> From: owner-toasters(a)mathworks.com on behalf of Davies,Matt > >>> Sent: Wed 7/11/2007 1:00 AM > >>> To: ggwalker(a)mindspring.com; toasters(a)mathworks.com > >>> Subject: RE: List still active? > >>> > >>> > >>> > >>> Still working by the looks of things. > >>> > >>> busy in process of migrating all our physical severs to VM, stored > >>> on a > >>> iscsi lun on a FAS 270. > >>> > >>> For those that want to know we are using the software iscsi > initiator > >>> within ESX and have not had any problems so far. > >>> > >>> cheers > >>> > >>> matt > >>> > >>> -----Original Message----- > >>> From: owner-toasters(a)mathworks.com <owner-toasters(a)mathworks.com> > >>> To: toasters(a)mathworks.com <toasters(a)mathworks.com> > >>> Sent: Wed Jul 11 01:03:49 2007 > >>> Subject: List still active? > >>> > >>> I've noticed that I'm still subscribed, but have received no email > >>> since > >>> July 4th. Everyone didn't trade their NetApp gear for something > else > >>> while I was out of town did they?? J > >>> > >>> > >>> > >>> _____________________________________________________________ > >>> 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 <mailto:help@generalatlantic.com>. Thank > You. > >>> > >>> > >>> > >>> > ###################################################################### > >> > >>> ## > >>> ############# > >>> Note: > >>> If you have received this message in error, please notify the > original > >>> sender immediately by telephone (203)975-2100 or by return e-mail, > and > >>> delete the message, along with any attachments from your computer. > If > >>> you have received this message in error, you are hereby notified > that > >>> any dissemination, distribution or copying of this e-mail, and any > >>> attachments thereto, is strictly prohibited.This note is also to > >>> notify > >>> the recipient of this email that it has been scanned for all known > >>> viruses and attacking techniques. Thank you. > http://www.rvigroup.com > >>> > ###################################################################### > >> > >>> ## > >>> ############# > >>> > >>> > ###################################################################### > >> > >>> ############### > >>> Note: > >>> If you have received this message in error, please notify the > >>> original sender immediately by telephone (203)975-2100 or by return > >>> e-mail, and delete the message, along with any attachments from > >>> your computer. If you have received this message in error, you are > >>> hereby notified that any dissemination, distribution or copying of > >>> this e-mail, and any attachments thereto, is strictly > >>> prohibited.This note is also to notify the recipient of this email > >>> that it has been scanned for all known viruses and attacking > >>> techniques. Thank you. http://www.rvigroup.com > >>> > ###################################################################### > >> > >>> ############### > >>> > >> > >> > > > > >

2 1

RE: NFS vs. iSCSI for VMware (was "Re: List still active?")
by Kenneth Heal 11 Jul '07

11 Jul '07

HiFilers will happily support NFS over TCP (indeed Netapp often recommends this, see for example http://www.netapp.com/library/tr/3183.pdf). There is also support for NFSv4 and apparently they have made some improvements to NFS in 7.2.x.I am not currently working much with ESX, so I shall have to leave that for others to comment on -- but this is an interesting discussion to follow. cheersKennethKenneth HealStorage ConsultantSenet Eindhoven bv> Subject: RE: NFS vs. iSCSI for VMware (was "Re: List still active?")> Date: Wed, 11 Jul 2007 16:00:48 +0100> From: MDAVIES(a)generalatlantic.com> To: slowe(a)EPLUS.com; toasters(a)mathworks.com> > > Is anyone using NFS volumes and VMware in a production environment ?> > I know it has been reported that there isn't a great deal difference in> performance especially when compared with IScsi, but is this true ?> > And from what I remember ESX only supports NFS V3 over TCP, do the> Filers work with this ? Sorry my knowledge of NFS wouldn't fill the back> of a postage stamp.> > And I'm sorry I have turned this into a VMware list :)> > > Cheers> > Matt> > > > > -----Original Message-----> From: Scott Lowe [mailto:slowe@EPLUS.com] > Sent: 11 July 2007 15:44> To: Davies,Matt; toasters(a)mathworks.com> Subject: NFS vs. iSCSI for VMware (was "Re: List still active?")> > The #1 complaint I have about using iSCSI relates to how LUNs are > handled in the NetApp world:> > 1. You have to (by default) allocate 2x + deltas for LUNs. For a > 100GB LUN, you'd need 240GB of space (by default--I know there are > workarounds with ONTAP 7.2 and later). With an NFS mount (which is > nothing more than exporting a FlexVol), you only need to account for > the 20% Snapshot reserve.> > 2. You can't resize iSCSI LUNs. With NFS on a FlexVol, you can > resize to your heart's content because WAFL is controlling the > filesystem--not the host.> > 3. It's open, meaning that your VMDKs aren't locked into the > proprietary VMFS file system. This could potentially simplify > backups and restores.> > As Glenn @ Voyant already mentioned, you also gain thin provisioned > disks by default and more knowledge/history/experience with NFS than > with iSCSI.> > Thanks,> Scott Lowe> ePlus Technology, Inc.> slowe(a)eplus.com> > > > On Jul 11, 2007, at 9:34 AM, Davies,Matt wrote:> > > Scott,> >> > Any chance you could expand on the advantages of NFS over Iscsi ? NFS> > isn't an area I have any experience of....> >> > Cheers> >> > Matt> >> > -----Original Message-----> > From: owner-toasters(a)mathworks.com [mailto:owner- > > toasters(a)mathworks.com]> > On Behalf Of Scott Lowe> > Sent: 11 July 2007 14:05> > To: Forest Leonard; toasters(a)mathworks.com> > Subject: Re: List still active?> >> > Forest,> >> > When it comes time to configure VMkernel for VMotion, then I'd> > definitely recommend keeping it separate from the virtual machine> > network. As it stands right now, you don't even need a VMkernel NIC> > configured because it sounds like you are using Qlogic iSCSI HBAs and> > only have a single ESX Server. Since the Qlogic cards handle the> > iSCSI traffic and there is no VMotion, there no current need for a> > VMkernel NIC (unless you want to use NFS from the FAS to provide> > additional storage for VMs--which, by the way, works pretty well and> > has some nice advantages over iSCSI, IMHO).> >> > Regards,> > Scott Lowe> > ePlus Technology, Inc.> > slowe(a)eplus.com> >> >> >> > On Jul 11, 2007, at 8:33 AM, Forest Leonard wrote:> >> >> Interesting stuff. I only have one ESX server so I haven't gotten> >> to the> >> Vmotion configuration yet.. That should be later this year.> >>> >> I just configured a RDM to run a Virtual server on. I found an > >> article> >> where you want to create the type as NTFS if it is a RDM for a > >> windows> >> host. Not sure if I am going to use this going forward. I actually> >> don't> >> know if you can migrate into a RDM. It doesn't look like it.> >>> >> I am only using 2 NIC's on my Vmware server.. and a QLOGIC card > >> for my> >> ISCSI access.. I may need to look at bulking up my NIC> >> configuration. It> >> looks like I may gain some performance if I separate my VMKernal> >> from my> >> Virtual Machine network?> >>> >> Thanks,> >> Forest> >>> >> -----Original Message-----> >> From: Davies,Matt [mailto:MDAVIES@generalatlantic.com]> >> Sent: Wednesday, July 11, 2007 8:18 AM> >> To: Forest Leonard; ggwalker(a)mindspring.com; toasters(a)mathworks.com> >> Subject: RE: List still active?> >>> >> Sounds like we are both at the same stage.> >>> >> We are not using RDM's yet, however when it comes to exchange we will> >> have to, or I may just stick with using the Microsoft Iscsi> >> initiatator> >> from within the VM, not exactly supported, but I know of other people> >> doing it.> >>> >> We have migrated 8 machines so far, into just one datastore and> >> have not> >> seen any performance problems at all, although most of the machines> >> have> >> very low IO requirements.> >>> >> We are using a script to snapshot and then replicate using > >> snapmirror,> >> it works very well, however our Virtual Centre server is also a VM> >> which> >> was causing a few problems with the snapshots on the VMware side not> >> being removed, but moving this to a separate datastore seems have> >> cured> >> the problems, even SQL doesn't seem to have a problem.> >>> >> The script is the one written by Evan Battle, that is in the newest> >> netapp docs on VMware. I did have a few problems with ssh to the> >> filer,> >> but we are now using rsh and it seems to be ok.> >>> >> I don't know how you have setup your virtual switches on the ESX > >> side,> >> but I got some best practice information out of VMware on that> >> subject.> >>> >> Each of our ESX IBM3550 host servers have 6 Nics, connected as> >> follows.> >>> >> 2 Nics for service console VMKernel for Vmotion, load balance using> >> Virtual port ID> >>> >> 2 Nics for Virtual Machine network, load balance using Virtual > >> port ID> >>> >> 2 Nics for ISCSI (Service Console and VMKernel), load balance > >> using IP> >> Hash> >>> >> Hope this helps....> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> -----Original Message-----> >> From: Forest Leonard [mailto:fleonard@rvigroup.com]> >> Sent: 11 July 2007 11:06> >> To: Davies,Matt; ggwalker(a)mindspring.com; toasters(a)mathworks.com> >> Subject: RE: List still active?> >>> >> Hey Matt... I am actually doing the exact same thing on a FAS 270.. I> >> have migrated about 7 servers so far.> >>> >> Are you using RDM's (remote device mappings) for the Virtual> >> Machines? I> >> actually just created 2 200GB LUNs on the netapp to use as Datastores> >> and have not had any performance issues.> >>> >> Just wondering what your experience with RDM's are.. I added one> >> into a> >> virtual machine.. It just lets you map a LUN directly to a Virtual> >> machine.> >>> >> Has anyone out there used the netapp script to capture a VM snapshot?> >>> >> Thanks,> >> Forest> >>> >> ________________________________> >>> >> From: owner-toasters(a)mathworks.com on behalf of Davies,Matt> >> Sent: Wed 7/11/2007 1:00 AM> >> To: ggwalker(a)mindspring.com; toasters(a)mathworks.com> >> Subject: RE: List still active?> >>> >>> >>> >> Still working by the looks of things.> >>> >> busy in process of migrating all our physical severs to VM, stored> >> on a> >> iscsi lun on a FAS 270.> >>> >> For those that want to know we are using the software iscsi initiator> >> within ESX and have not had any problems so far.> >>> >> cheers> >>> >> matt> >>> >> -----Original Message-----> >> From: owner-toasters(a)mathworks.com <owner-toasters(a)mathworks.com>> >> To: toasters(a)mathworks.com <toasters(a)mathworks.com>> >> Sent: Wed Jul 11 01:03:49 2007> >> Subject: List still active?> >>> >> I've noticed that I'm still subscribed, but have received no email> >> since> >> July 4th. Everyone didn't trade their NetApp gear for something else> >> while I was out of town did they?? J> >>> >>> >>> >> _____________________________________________________________> >> 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 <mailto:help@generalatlantic.com>. Thank > >> You.> >>> >>> >>> >> #####################################################################> > >> #> >> >> ##> >> #############> >> Note:> >> If you have received this message in error, please notify the > >> original> >> sender immediately by telephone (203)975-2100 or by return e-mail, > >> and> >> delete the message, along with any attachments from your > >> computer. If> >> you have received this message in error, you are hereby notified that> >> any dissemination, distribution or copying of this e-mail, and any> >> attachments thereto, is strictly prohibited.This note is also to> >> notify> >> the recipient of this email that it has been scanned for all known> >> viruses and attacking techniques. Thank you. http://www.rvigroup.com> >> #####################################################################> > >> #> >> >> ##> >> #############> >>> >> #####################################################################> > >> #> >> >> ###############> >> Note:> >> If you have received this message in error, please notify the> >> original sender immediately by telephone (203)975-2100 or by return> >> e-mail, and delete the message, along with any attachments from> >> your computer. If you have received this message in error, you are> >> hereby notified that any dissemination, distribution or copying of> >> this e-mail, and any attachments thereto, is strictly> >> prohibited.This note is also to notify the recipient of this email> >> that it has been scanned for all known viruses and attacking> >> techniques. Thank you. http://www.rvigroup.com> >> #####################################################################> > >> #> >> >> ###############> >>> >> >> > > _________________________________________________________________ With Windows Live Hotmail, you can personalize your inbox with your favorite color. www.windowslive-hotmail.com/learnmore/personalize.html?locale=en-us&ocid=TX…

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RE: List still active?
by Davies,Matt 11 Jul '07

11 Jul '07

Glenn, Thanks for the info, perhaps it's time to get a NFS license for my filers. Cheers Matt -----Original Message----- From: Glenn Dekhayser [mailto:gdekhayser@voyantinc.com] Sent: 11 July 2007 14:55 To: Davies,Matt; Scott Lowe; Forest Leonard; toasters(a)mathworks.com Subject: RE: List still active? Advantages IMHO 1) VMDKs on NFS are by default THIN-Provisioned; 2) Throughput is about equal 3) NFS is a heck of a lot easier to administer 4) There's 3x longer history and knowledgebase on NFS network t-shooting. Dis-Advantages: 1) You can do a QLogic iSCSI card to offload CPU processing of packets; 2) In a big environment you can use iSNS; 3) You can be much more granular with masking/etc (although I can imagine you can be creative with NFS) 4) NFS is stateless (v2), to be run fastest you use UDP; so to make it reliable it gets a little slower (but still not a real biggie) Anyone else? Glenn @ VOyant > -----Original Message----- > From: owner-toasters(a)mathworks.com [mailto:owner- > toasters(a)mathworks.com] On Behalf Of Davies,Matt > Sent: Wednesday, July 11, 2007 9:35 AM > To: Scott Lowe; Forest Leonard; toasters(a)mathworks.com > Subject: RE: List still active? > > Scott, > > Any chance you could expand on the advantages of NFS over Iscsi ? NFS > isn't an area I have any experience of.... > > Cheers > > Matt > > -----Original Message----- > From: owner-toasters(a)mathworks.com [mailto:owner- > toasters(a)mathworks.com] > On Behalf Of Scott Lowe > Sent: 11 July 2007 14:05 > To: Forest Leonard; toasters(a)mathworks.com > Subject: Re: List still active? > > Forest, > > When it comes time to configure VMkernel for VMotion, then I'd > definitely recommend keeping it separate from the virtual machine > network. As it stands right now, you don't even need a VMkernel NIC > configured because it sounds like you are using Qlogic iSCSI HBAs and > only have a single ESX Server. Since the Qlogic cards handle the > iSCSI traffic and there is no VMotion, there no current need for a > VMkernel NIC (unless you want to use NFS from the FAS to provide > additional storage for VMs--which, by the way, works pretty well and > has some nice advantages over iSCSI, IMHO). > > Regards, > Scott Lowe > ePlus Technology, Inc. > slowe(a)eplus.com > > > > On Jul 11, 2007, at 8:33 AM, Forest Leonard wrote: > > > Interesting stuff. I only have one ESX server so I haven't gotten > > to the > > Vmotion configuration yet.. That should be later this year. > > > > I just configured a RDM to run a Virtual server on. I found an > article > > where you want to create the type as NTFS if it is a RDM for a > windows > > host. Not sure if I am going to use this going forward. I actually > > don't > > know if you can migrate into a RDM. It doesn't look like it. > > > > I am only using 2 NIC's on my Vmware server.. and a QLOGIC card for > my > > ISCSI access.. I may need to look at bulking up my NIC > > configuration. It > > looks like I may gain some performance if I separate my VMKernal > > from my > > Virtual Machine network? > > > > Thanks, > > Forest > > > > -----Original Message----- > > From: Davies,Matt [mailto:MDAVIES@generalatlantic.com] > > Sent: Wednesday, July 11, 2007 8:18 AM > > To: Forest Leonard; ggwalker(a)mindspring.com; toasters(a)mathworks.com > > Subject: RE: List still active? > > > > Sounds like we are both at the same stage. > > > > We are not using RDM's yet, however when it comes to exchange we will > > have to, or I may just stick with using the Microsoft Iscsi > > initiatator > > from within the VM, not exactly supported, but I know of other people > > doing it. > > > > We have migrated 8 machines so far, into just one datastore and > > have not > > seen any performance problems at all, although most of the machines > > have > > very low IO requirements. > > > > We are using a script to snapshot and then replicate using > snapmirror, > > it works very well, however our Virtual Centre server is also a VM > > which > > was causing a few problems with the snapshots on the VMware side not > > being removed, but moving this to a separate datastore seems have > > cured > > the problems, even SQL doesn't seem to have a problem. > > > > The script is the one written by Evan Battle, that is in the newest > > netapp docs on VMware. I did have a few problems with ssh to the > > filer, > > but we are now using rsh and it seems to be ok. > > > > I don't know how you have setup your virtual switches on the ESX > side, > > but I got some best practice information out of VMware on that > > subject. > > > > Each of our ESX IBM3550 host servers have 6 Nics, connected as > > follows. > > > > 2 Nics for service console VMKernel for Vmotion, load balance using > > Virtual port ID > > > > 2 Nics for Virtual Machine network, load balance using Virtual port > ID > > > > 2 Nics for ISCSI (Service Console and VMKernel), load balance using > IP > > Hash > > > > Hope this helps.... > > > > > > > > > > > > > > > > > > > > -----Original Message----- > > From: Forest Leonard [mailto:fleonard@rvigroup.com] > > Sent: 11 July 2007 11:06 > > To: Davies,Matt; ggwalker(a)mindspring.com; toasters(a)mathworks.com > > Subject: RE: List still active? > > > > Hey Matt... I am actually doing the exact same thing on a FAS 270.. I > > have migrated about 7 servers so far. > > > > Are you using RDM's (remote device mappings) for the Virtual > > Machines? I > > actually just created 2 200GB LUNs on the netapp to use as Datastores > > and have not had any performance issues. > > > > Just wondering what your experience with RDM's are.. I added one > > into a > > virtual machine.. It just lets you map a LUN directly to a Virtual > > machine. > > > > Has anyone out there used the netapp script to capture a VM snapshot? > > > > Thanks, > > Forest > > > > ________________________________ > > > > From: owner-toasters(a)mathworks.com on behalf of Davies,Matt > > Sent: Wed 7/11/2007 1:00 AM > > To: ggwalker(a)mindspring.com; toasters(a)mathworks.com > > Subject: RE: List still active? > > > > > > > > Still working by the looks of things. > > > > busy in process of migrating all our physical severs to VM, stored > > on a > > iscsi lun on a FAS 270. > > > > For those that want to know we are using the software iscsi initiator > > within ESX and have not had any problems so far. > > > > cheers > > > > matt > > > > -----Original Message----- > > From: owner-toasters(a)mathworks.com <owner-toasters(a)mathworks.com> > > To: toasters(a)mathworks.com <toasters(a)mathworks.com> > > Sent: Wed Jul 11 01:03:49 2007 > > Subject: List still active? > > > > I've noticed that I'm still subscribed, but have received no email > > since > > July 4th. Everyone didn't trade their NetApp gear for something else > > while I was out of town did they?? J > > > > > > > > _____________________________________________________________ > > 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 <mailto:help@generalatlantic.com>. Thank > You. > > > > > > > > > ###################################################################### > > > ## > > ############# > > Note: > > If you have received this message in error, please notify the > original > > sender immediately by telephone (203)975-2100 or by return e-mail, > and > > delete the message, along with any attachments from your computer. > If > > you have received this message in error, you are hereby notified that > > any dissemination, distribution or copying of this e-mail, and any > > attachments thereto, is strictly prohibited.This note is also to > > notify > > the recipient of this email that it has been scanned for all known > > viruses and attacking techniques. Thank you. http://www.rvigroup.com > > > ###################################################################### > > > ## > > ############# > > > > > ###################################################################### > > > ############### > > Note: > > If you have received this message in error, please notify the > > original sender immediately by telephone (203)975-2100 or by return > > e-mail, and delete the message, along with any attachments from > > your computer. If you have received this message in error, you are > > hereby notified that any dissemination, distribution or copying of > > this e-mail, and any attachments thereto, is strictly > > prohibited.This note is also to notify the recipient of this email > > that it has been scanned for all known viruses and attacking > > techniques. Thank you. http://www.rvigroup.com > > > ###################################################################### > > > ############### > > > > >

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List still active?
by Glenn Walker 11 Jul '07

11 Jul '07

I've noticed that I'm still subscribed, but have received no email since July 4th. Everyone didn't trade their NetApp gear for something else while I was out of town did they?? :-)

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