Muthyam,
Lotza things you could look at:
DSM.SYS file check the parmaters, do they make sense or jive with your OS
settings?
Check the archives for TSM to OS tuning, I've caught a lot of good articles
there!
Is compression on? Lotz of work on the client to do that.
What is your backbone? GBit/Css/En ?
Is your API current? What DB2 level are you at, there was a bug back a year or
so
ago with DB2 not working correctly with TSM.
Is your TSM server a utility server like ours running 60+ billion other
applications, gasping for memory begging to turn itself off?
We had a slowness or "it won't do" performance problem. We took 3 hours off our
backups changing mgmt class to go to tape. Also running 1/2 on SP switch and
1/2 on
GBit.(Switch card was getting hammered)
I get about 25 Sessions/Clients done in 15-16 hours for 12TB. 12 Fcal Tape
drives(3590). Client wants it done in 8.
All I want for xmas is a NEW TSM server. :)
--- Muthyam Reddy <MREDDY AT JOY DOT COM> wrote:
> ** High Priority **
>
> Hello...one and all
> subject:Slow DB2 backups on TSM.
>
> We have recently migrated our database to DB2 from Infromix on AIX 4.3 and TSM
> version level 5.1.0.0.
> Before migration.. Informix database use to take 7 -8 hrs for 400Gb
> database(RAW
> filesystems).Now same size of Database on DB2(raw filesystems) is taken 16hrs
> to
> offline backup.Guess I'm missing some important parameters somewhere on
> client or
> server configuration files.
>
>
> Please can anyone share their knowledge in taking fast efficient backups on
> DB2
> to TSM.
> Advice me what kind of compression makes things work better.
>
> We are just migrated to DB2.
>
> please...... needs urs help.
>
> thanks and regards
> /mani
>
>
>
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