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Exchange growth after migration.
by Darren Dunham 11 Nov '04

11 Nov '04

Danger, I'm not a windows person, so I'm a little over my head on part of this. I've got a client that has just completed a migration of their Exchange 2000 servers onto a netapp iscsi lun with snapmanager. So far everything seems to be working great on the netapp side. However, after running on the server for two weeks, their private store has jumped from about 120G to about 220G. Some of their support is suggesting that the standard Exchange backup process has some cleanup functions that run during the backup. Now that it doesn't run any longer with snapmanager in place, the cleanup is no longer performed and the DB grows out of control (unless you shut down and do a defrag). Does this sound familiar to anyone? I'm looking for confirmation, refutation, or hey, even solutions on this. I'm hoping there are similar environments out there. Specifically, a larger database (such that the nightly cleanup process can't tackle the entire store overnight). Please don't ask me for anything that requires debugging. I'm not the windows guy. I'm just trying to find out if this growth has occurred at other sites. It's been escalated with both Netapp and Microsoft, but no word yet on if this is expected behavior. Thanks! -- Darren Dunham ddunham(a)taos.com Senior Technical Consultant TAOS http://www.taos.com/ Got some Dr Pepper? San Francisco, CA bay area < This line left intentionally blank to confuse you. >

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RE: Exchange growth after migration.
by Benn, Paul 11 Nov '04

11 Nov '04

Hi Sto Rage (sorry, don't know your real name), You are correct in that SME is "Exchange aware." This option is not available in Exchange 5.5, which might explain why you do not see it on your server. If this is what I think it is, it is likely to be what Paul Galjan writes of below. If so, this is a known issue and is documented in NetApp online bug 53144 and also on page 92 of the SnapManager for Exchange version 3.1 Installation and Administration Guide. Here is a direct link to the article for those of you who want to read about it and have access to NOW. http://now.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=53144 Basically, Exchange 2000 and Exchange Server 2003 have an option of "Do not permanently delete mailboxes and items until the store has been backed up." The option itself should be self explanatory. The issue is that in order for this feature to function, the entire database needs to be read during the backup process. This happens when you spool to tape or to a .BKF file, for example. SnapManager uses snapshot technology to perform the backup process so it does not read the entire database as part of the backup. This is simply a limitation of Exchange 2000 that is exposed when using snapshot technology to perform backups and is *not* limited to Network Appliance filers or to SnapManager for Exchange itself. This Exchange option is *disabled* by default, which could also explain why you did not run into the unexplained growth. There are three ways to get around this issue: 1) Disable the Exchange 2000 option of "Do not permanently delete mailboxes and items until the store has been backed up." 2) Run a copy-type backup in addition to the SnapManager backups using an Exchange aware backup application, such as NTBackup. This is what Paul Galjan suggested below. This can be done, say, once per week and could be spooled to a .BKF file versus a tape device. Some SnapManager customers create backup archives by creating a copy type backup anyway. Doing so would not only provide a backup archive but would also provide a work around to the above mentioned issue. 3) Move to Exchange Server 2003 on Windows Server 2003 to get the VSS technology. When running this combination of Exchange and Windows, VSS is used to create the snapshots. The issue does *not* apply to SME backups performed via VSS. I realize that this may not be an option for everyone but I am just calling it out as another way to solve the problem. I hope this sheds some light on the issue. Please let us know if further clarification is needed. Regards, Paul Benn SnapManager Engineering Network Appliance > -----Original Message----- > From: Sto Rage(c) [mailto:netbacker@gmail.com] > Sent: Wednesday, November 10, 2004 5:06 PM > To: Paul Galjan > Cc: toasters(a)mathworks.com > Subject: Re: Exchange growth after migration. > > Are you sure of this? I thought when you schedule SnapManager for > Exchange (SME) backups to create the snapshots, Exchange is aware of > the full backup being done and it will truncate the transaction logs > and also delete the items deleted as specified in the Limits tab. When > you look at the database tab, it should show the time of the last full > backup which would correspond to the last snapshot taken via SME. > Am I wrong? We too recently migrated our exchange env to a netapp > platform and haven't noticed any major database bloat (yet?). We do > have the option "Donot delete .... until the store has been backed up" > checked. Well, maybe our users don't delete any mails ;) > > Darren, the question you should ask your Exch admin is ... are they > using SME for scheduling the backups or someother means. Ask them to > look at the database tab and see if it has a time recored for full > backups. The time for incrementals would be none, since SME doesn't do > an incremental backup. > Hope this helps. > > -G > > > > > On Wed, 10 Nov 2004 17:40:46 -0500, Paul Galjan > <galjan(a)gmail.com> wrote: > > Hi Darren, > > > > Tech support is correct if you have some the checkbox > "Uncheck "Do not > > permanently delete mailboxes and items until the store has > been backed > > up" > > > > The problems lies in the difference between the way > NTbackup and other > > Exchange-aware backup programs and snapshot backup programs like SME > > work. When other backup programs do a backup, all blocks are read > > from the DB, and Exchange knows that items can be deleted "for real" > > after the blocks have been read. When SME (or any other > > snapshot-based program, for that matter), does a backup, the blocks > > are read by eseutil, but only after the backup is done, and > it's done > > on the snapshot (not the active DB), so Exchange doesn't > know to clean > > up deleted items. > > > > This is an issue with any snapshot-based Exchange backup program. > > Right now, Microsoft doesn't have any special hooks into its backup > > API to allow this cleanup to be invoked after a snapshot. (I don't > > know if/when that's coming). The workaround right now is to either > > turn that option off in Exchange, or run occasional copy-only backup > > jobs with ntbackup or somesuch. > > > > More information on how to turn this option off is here: > > http://www.msexchange.org/tutorials/MF022.html > > > > --paul > > > > On Wed, 10 Nov 2004 12:55:28 -0800 (PST), Darren Dunham > > > > > > <ddunham(a)taos.com> wrote: > > > Danger, I'm not a windows person, so I'm a little over my > head on part > > > of this. > > > > > > I've got a client that has just completed a migration of their > > > Exchange 2000 servers onto a netapp iscsi lun with > snapmanager. So > > > far everything seems to be working great on the netapp side. > > > > > > However, after running on the server for two weeks, their > private store > > > has jumped from about 120G to about 220G. Some of their > support is > > > suggesting that the standard Exchange backup process has > some cleanup > > > functions that run during the backup. Now that it doesn't run any > > > longer with snapmanager in place, the cleanup is no > longer performed and > > > the DB grows out of control (unless you shut down and do > a defrag). > > > > > > Does this sound familiar to anyone? I'm looking for confirmation, > > > refutation, or hey, even solutions on this. I'm hoping there are > > > similar environments out there. Specifically, a larger > database (such > > > that the nightly cleanup process can't tackle the entire store > > > overnight). > > > > > > Please don't ask me for anything that requires debugging. > I'm not the > > > windows guy. I'm just trying to find out if this growth > has occurred at > > > other sites. It's been escalated with both Netapp and > Microsoft, but no > > > word yet on if this is expected behavior. > > > > > > Thanks! > > > -- > > > Darren Dunham > ddunham(a)taos.com > > > Senior Technical Consultant TAOS > http://www.taos.com/ > > > Got some Dr Pepper? San > Francisco, CA bay area > > > < This line left intentionally blank to confuse you. > > > > > > >

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wafl scan measure_layout
by SKIP HOFMANN 10 Nov '04

10 Nov '04

Hello all I have an exchange 5.5 database on a FAS 250 filer. When I run the waffle scan on the vol that holds the exchange DB it comes back pretty good. The database is around 50 gigs. My question is can I use the wafl scan measure layout command to effectively determine when my DB needs to be defragged? Skip Skip Hofmann Senior Network Administrator TetraTech Skip.Hofmann(a)ttisg.com <mailto:Skip.Hofmann@ttisg.com> 949 500 5286 cell 949 608 5801 office

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Re: spares disks no more equivalent from one filer to another one
by Davin Milun 10 Nov '04

10 Nov '04

At 14:33, on Oct 26, 2004, Stephane wrote: > Derek Lai wrote: > > >I will not work either with just a simple spares_zero command (which > >only zeros a spare). The problems is DataOntap will refuse to put the drives > >into the system. You have to completely rewrite the label on the drive. To > >do so requires that you reboot and drop into the maintenance menu and then > >pick the option to re-label the drive. > > > yes, type ^C at boot, but instead of choosing "maintenance mode" choice > 5, choose "zeroing all disk" choice 4 > this my workaround : this erase all label on all disk (and all data so > beware) > zeroing doesn't have to terminate, run it only for 5 or 15 minutes Does anyone know if the "label" command from "priv set diag" can be used (running from a pre-6.5 filer)? Is anyone willing to share the syntax for that command, as I don't have a non-production filer to play on. Basically, I have 3 disks that were inadvertently inserting into a box running 6.5 - and I'd like to reclaim them for use under 6.4, but without having to have a head down in maint mode to do so. Thanks. Davin. -- Davin Milun Email: milun-at-cse.Buffalo.EDU milun-at-acm.org

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LTO-2 drives issues
by Carlos A. Alvarez 10 Nov '04

10 Nov '04

Hi All, I installed a Library StorageTek L80 with one drive LTO2 Certance Ultrium 2 connected via SCSI LVD to Filer F840 with Ontap 6.4.3. This release does not support LTO 2 so I dynamically qualified a IBM Ultrium-TD2. Then I emulated Certance Ultrium 2 as IBM Ultrium-TD2 with success. But a error appears when I try to use LTO2 format (rst4a/h), wich is displayed but not recognized. Does someone suffer a similar issue? Thanks bafiler01> mt -f rst4a status Tue Nov 9 20:15:13 ART [scsi.cmd.checkCondition:error]: Device 2a.1: Check Cond ition: CDB 0x15: Sense Data SCSI:illegal request - (0x5 - 0x26 0x0 0x0)(2). Tape drive: CERTANCEULTRIUM 2 Status: ready, write enabled Format: LTO-I tape only 100GB fileno = 0 blockno = 0 resid = 0 bafiler01> sysconfig -t Tape drive (2a.1) CERTANCEULTRIUM 2 emulates ULTRIUM-TD2 rst4l - rewind device, format is: LTO-I tape only 100GB nrst4l - no rewind device, format is: LTO-I tape only 100GB urst4l - unload/reload device, format is: LTO-I tape only 100GB rst4m - rewind device, format is: LTO-I tape 200GB cmp nrst4m - no rewind device, format is: LTO-I tape 200GB cmp urst4m - unload/reload device, format is: LTO-I tape 200GB cmp rst4h - rewind device, format is: LTO-II tape only 200GB nrst4h - no rewind device, format is: LTO-II tape only 200GB urst4h - unload/reload device, format is: LTO-II tape only 200GB rst4a - rewind device, format is: LTO-II tape 400GB cmp nrst4a - no rewind device, format is: LTO-II tape 400GB cmp urst4a - unload/reload device, format is: LTO-II tape 400GB cmp

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RE: Simulator error
by aaron hirsch 10 Nov '04

10 Nov '04

Gentoo Linux with the 2.6.9 kernel on one box,i386, and 2.6.7 kernel on a Opeteron box. -----Original Message----- From: Kleinbrahm, Bob [mailto:rkleinbrahm@firstrepublic.com] Sent: Wed 11/10/2004 1:16 PM To: aaron hirsch; toasters(a)mathworks.com Cc: Subject: RE: Simulator error What versin of Linux are you running? I had a similar error when I was running RH 7.2 and upgraded to Fedora to get rid of the error. Bob -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of aaron hirsch Sent: Wednesday, November 10, 2004 10:02 AM To: toasters(a)mathworks.com Subject: Simulator error All, I'm attempting to get the DOT simulator running for demo purposes and am getting the following error when I run runsim.sh: maytag.L[5706]: segfault at 0000000000000000 rip 0000000008aa1d47 rsp 0000000055a3e398 error 6 Anyone have any ideas of where to start to troubleshoot this problem? TIA! Aaron ----------------------------------------------------------------------- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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RE: Simulator error
by Kleinbrahm, Bob 10 Nov '04

10 Nov '04

What versin of Linux are you running? I had a similar error when I was running RH 7.2 and upgraded to Fedora to get rid of the error. Bob -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of aaron hirsch Sent: Wednesday, November 10, 2004 10:02 AM To: toasters(a)mathworks.com Subject: Simulator error All, I'm attempting to get the DOT simulator running for demo purposes and am getting the following error when I run runsim.sh: maytag.L[5706]: segfault at 0000000000000000 rip 0000000008aa1d47 rsp 0000000055a3e398 error 6 Anyone have any ideas of where to start to troubleshoot this problem? TIA! Aaron ----------------------------------------------------------------------- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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Simulator error
by aaron hirsch 10 Nov '04

10 Nov '04

All, I'm attempting to get the DOT simulator running for demo purposes and am getting the following error when I run runsim.sh: maytag.L[5706]: segfault at 0000000000000000 rip 0000000008aa1d47 rsp 0000000055a3e398 error 6 Anyone have any ideas of where to start to troubleshoot this problem? TIA! Aaron

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Using unsipported FC switches
by graeme_taylor＠agilent.com 10 Nov '04

10 Nov '04

Hi, We're currently looking at replacing our F820 with a FAS270. We'd like to take advantage of the library(ADIC Scalar 10K) we already have attached to our backup SAN. Unfortunately the SAN is based around EMC Connectrix switches(ED-64M). Not something NetApp seem to support. No surprise there really :) Just wondering if anyone is successfully using a FC backup solution that makes use of non-supported FC switches, and if so what the vendor is. Graeme.

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RE: Using unsipported FC switches
by Garavito, Donald, CTR, OSD-ATL 10 Nov '04

10 Nov '04

FYI, Per Veritas HCL for Veritas Storage Solution (another EMC subsidary): McData ED6064 Switch = EMC ED64M = HP StorageWorks SAN Directory 2/64 = HP SureStore FC 64 So, the NetApp-McData compatibility listing will apply. Hope this helps out. Don -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stephane Sent: Wednesday, November 10, 2004 8:03 AM Cc: toasters(a)mathworks.com Subject: Re: Using unsipported FC switches try to talk about this issue to your sale represent. Netapp is continuouslly integrating compatibility w/ different SAN product. Your case may reflect a general and/or help netapp in his work. graeme_taylor(a)agilent.com wrote: >Hi, > >We're currently looking at replacing our F820 with a FAS270. We'd like >to take advantage of the library(ADIC Scalar 10K) we already have >attached to our backup SAN. Unfortunately the SAN is based around EMC >Connectrix switches(ED-64M). Not something NetApp seem to support. No >surprise there really :) > >Just wondering if anyone is successfully using a FC backup solution >that makes use of non-supported FC switches, and if so what the vendor >is. > >Graeme. > > >

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