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Thread: Newbie needs advice..
10-12-2012, 10:24 AM #1
Newbie needs advice..
Unfortunately, I've inherited the admin of a somewhat sick TSM system... Here's what I've gleaned so far:
1) maintenance that should be performed is:
Disk Storage Pool Backups
Tape Storage Pool Backups
Another DB Backup
My question... of the above processes, which can run concurrent with each other, and which ones cannot. Am I running them in the correct order? I also need to add 2 additional steps, and they are the move drm, one for getting tapes sent back to us from our offsite storage, and one for pulling local tapes to be sent offsite. Where should I stick these 2 processes.. Obviously, I would think that the DB Backup should be run when the system is quiesed. The Expirations process seems to vary from 1 hour to 3 hours to complete, and re Reclamations have never run to completion, (which is a cause of concern because we were to the point of having no scratch tapes at all, and every thing was going down hill very quickly.)..
I was able to let the reclamation for our offsite storage pool run for 2 and 1/2 days, and managed to get back 13 scratch tapes. I also ran across a script that would allow me to see tapes that had a very low % of usage, and was able to claim some scratch tapes back from that...
Honestly, I'm starting to thing that our server is running out of cpu cycles, as it does not appear to be able to get the "daily maintenance" completed to the satisfaction of being able to keep my scratch tape inventory high enough to keep from running out of scratch tapes.
Initially the expiration and reclamation jobs were set with durations that were dynamically calculated based on the time of day, and knowing when client backups would start kicking off. After talking with some folks, it was pretty much determined that bacause these processes were being terminated early, that they were never really able to reclaim any scratch tapes...
Thanks every so much for understanding the plight of a newbie...
10-12-2012, 12:05 PM #2
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10-15-2012, 05:00 AM #3
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The following is the order of each steps I take every day:
- Backup the primary disk pools to the copy tape pool
- Backup the primary tape pools to the copy tape pool (incase the disk pool filled and put data in the next pool)
- Backup the TSM DB to tape
- Move tapes to the I/O (move drmedia * wherestate=mountable tostate=notmountable)
- Prepare the recovery plan file and mail them to myself
- Copy data to the active pools
- Migrate data from the disk pool to the primary tape pool
- search for expired data in the DR to reclaim the tapes (EXPIRE INVENTORY)
- Reclaim storage from expired pools (RECLAIM STGPOOL)
- Audit Primary Active Disk Pool for errors (only on weekends)
I hope this helps. I can always send you the bash script if it helps but it's still work in progress.Current Infrastructure:
TSM Server 220.127.116.11 running on Linux Suse 11 SP2 - TSM Clients all running 18.104.22.168 or better - TDPs at latest version.
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