ADSM-L

Restore in DR site is very slow

2006-07-28 07:55:08
Subject: Restore in DR site is very slow
From: William <weiduo.deng AT GMAIL DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 28 Jul 2006 07:54:05 -0400
Production side:
TSM Server: 5.3.3 on AIX 5.3
Tape Library: 3584 with 8 LTO3 drives
DB2 database: 8.2,   1.2TB with 7 backup drives, backup time 1.2 hour
offisite copy, 2 processes, with 4 drives.

DR site:
TSM Server: 5.3.3 on AIX 5.3
Tape Library: 3584 with 4 LTO3 drives


My problem is, when I did twice restore test, the first time it used 4
drives to do restore, used 5 hours to restore. The second test, it only used
2 drives to do restore and it used 12 hours.

My question is, how can I ensure the restore can constantly use 4 drives to
do restore?

TIA.

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