We enabled jumbo frames just for our Exchange backups, and that helped. TSM
server is a p740, 2 10Gb NICs. Backups used to go direct to LTO4 tape which
worked ok, but now go to FILE (7200 SAS-NL). We are seeing network transfer
rates (ANE4966I) of 66 to 180 MB/s, depending on the data size. Larger
transfers are in the 60-90 MB/s range, as Charles suggested. We have 10
Exchange servers, all feeding data to our TSM server somewhat in parallel.
HTH
..Paul
At 09:43 AM 5/15/2012, Hart, Charles A wrote:
>We also stager full / incrs every other day, If you're backing up 1.2TB
>in 14hrs you're only achieving 22MBS, you may have a performance
>opportunity such as checking Disk I/O on your backup server as well as
>the Exchange host for constraints, mutli stream your backups one thread
>per stggroup and check your network links, ensure other Exchange
>housekeeping tasks arnt running during backup window assuming you have a
>gig NIC for backups you should see 60-80MBS assuming solid cfg as the
>Exchange stggrps usually stream well.
>
>Regards,
>
>Charles
>
>
>-----Original Message-----
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
>Schaub, Steve
>Sent: Tuesday, May 15, 2012 6:34 AM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Re: [ADSM-L] Mega-Exchange backup
>
>Wanda,
>We do this now, along with running multiple concurrent SG backups.
>Contact me offline and I'll send you a copy of our current Powershell
>script.
>
>Steve Schaub
>Systems Engineer II, Windows Backup/Recovery
>BlueCross BlueShield of Tennessee
>steve_schaub AT bcbst.com
>423-535-6574 (desk)
>
>-----Original Message-----
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
>Prather, Wanda
>Sent: Monday, May 14, 2012 9:53 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: [ADSM-L] Mega-Exchange backup
>
>I have a customer with a 1.2 TB Exchange 2007 DB, expected to grow to 3
>TB in the next 4 months.
>Fulls are already a problem (14 hours).
>Is there any Exchange-related reason I can't do the fulls for a couple
>of storage groups on Monday, the next 2 on Tuesday, next 2 on Weds. etc
>and spread them out?
>
>Thanks ..
>-----------------------------------------------------
>Please see the following link for the BlueCross BlueShield of Tennessee
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>
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--
Paul Zarnowski Ph: 607-255-4757
CIT Infrastructure / Storage Services Fx: 607-255-8521
719 Rhodes Hall, Ithaca, NY 14853-3801 Em: psz1 AT cornell DOT edu
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