Thank you Del, Sometimes, people need to hear IT from other people. Thanks again especially for the MS KB Link!
-----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Del Hoobler Sent: Monday, February 11, 2008 1:47 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Exchange TDP Backups / Performance and RC Errors You should not be running Exchange backups and Exchange defragmentation at the same time. You should run your last incremental or differential backup (if you are using them) just before running a defrag, run the defrag, wait for the defrag to complete, and then run a new Exchange full backup. Here is the Microsoft KB article that gives you some details on why: http://support.microsoft.com/kb/328804 Thanks, Del ---------------------------------------------------- "ADSM: Dist Stor Manager" <ADSM-L@VM.MARIST.EDU> wrote on 02/11/2008 02:29:20 PM: > > We've been noticing poor performance from our Exchange TDP backups. > > 1) The TDP Client runs 4 Streams (One per E-Mail Storage Group) > utilizing a dedicated Gige backup NIC. > > 2) The Backup Server is a IBM p570 with 2 3Gige Ether Channel bundles, > (Traffic is going over backup NIC) but they are seeing 4-5MBS per > stream averaging 20MBS combined. > > 3) The Exchange Team is running the Exchange online Defrag on the > message stores during the TDP backups, which I know has to have some > impact but have not been able to quantify. I would say stop running > both processes concurrently, but need convincing data for Exchange Admins. > > 4)The Exchange Backups occasionally run in the Rc = 425 Errors which > I've found a few posts on that point to the Exchange Server being too > busy to process the E-Mail Backups? They also see a few RC = 50's... > Of course nothing interesting on the TSM Server side log, other than > session starts and stops. > > 5) I think the TCP Settings on the E-mail Server and TDP cfg are > default, so there's probably TCP Window Size and Buffer Opportunities. > > It would be great for some one to share any convincing data as to > their performance improvements to Exchange Backups. > > Thanks again! This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately.
