It's a theoretical question.. I am purposefully avoiding going into the details of why and I'm well aware of a more typical implementation like you outlined. Even in your situation though it's possible (though unlikely) some sysadmin might do an adhoc backup at 3:15AM causing the situation I'm describing (data incoming into diskpool while a backup stgpool is occurring). Unless you also disable sessions right before you do your backup stgpool and enable afterwards.
Gerald Wichmann Sr. Systems Development Engineer Zantaz, Inc. 925.598.3099 w 408.836.9062 c -----Original Message----- From: Mire, Nona [mailto:[EMAIL PROTECTED]] Sent: Wednesday, May 01, 2002 3:16 PM To: [EMAIL PROTECTED] Subject: Re: backup stgpool We start all of our backups between 9PM and Midnight - we have 39 clients - our backups finish up before midnight. Our primary storage pool is a diskpool. We then do a backup of our diskpool to the copypool. (around 3AM) Then do a migration from our diskpool to the tapepool. 5AM Then a backup storage pool from tapepool to copypool (shouldn't do anything - just a safety net) DB backup is happening at 7AM. Our reclaimations happens during the day in the afternoon at 2PM and finish up by 7 or 8PM. I'm not sure why you have backups going 24x7 but I would be scared that your database backup would not be clean and any particular time. -----Original Message----- From: Gerald Wichmann [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, May 01, 2002 4:55 PM To: [EMAIL PROTECTED] Subject: backup stgpool Given an environment where you pretty much have constant backups occurring to your TSM server 24x7 (say every 2 hours) and thus to your primary pools, how does this affect copying the data to a copypool? i.e. if my TSM server is currently accepting backups from one or more clients and that data is initially going to my diskpool (migrated to tape as the diskpool fills) - now suddenly I kick off a backup stgpool to a copypool from that diskpool. With files continuously coming into the diskpool will that be a problem for my copypool? I understand that perhaps I may miss some of those incoming files and that's a potential issue but it doesn't concern me so long as they're caught in my next backup stgpool command. I'm just thinking out loud what potential problems if any there are with doing a backup stgpool from a primary pool that is currently receiving files. Offhand I can't think of any other then hitting the disks a little harder and maybe not catching some of those incoming files.. also I suppose if your offsite pool has collocation enabled there might be some interesting mounting/dismounting happening. Gerald Wichmann Sr. Systems Development Engineer Zantaz, Inc. 925.598.3099 w 408.836.9062 c
