ADSM-L

Disaster Recovery questions

1998-10-07 09:35:09
Subject: Disaster Recovery questions
From: Ronnie Ignacio <rigna1 AT JCPENNEY DOT COM>
Date: Wed, 7 Oct 1998 09:35:09 -0400
Hi ADSMers,

I'm new to ADSM and need your help. (Our ADSM Admin had left for greener 
pasture). I just
created a disaster recovery plan by issuing the PREPARE command, and the plan 
indicates that
to restore our servers, I needed to restore 400 tapes!!!. I ran a space 
reclamation on our
offsite tapes and the number of tapes to be restored went down a litte bit when 
I issued
the PREPARE command again. The following is our environment. We are currently 
backing up 15
unix servers with ADSM. We do an incremental backup everyday on our 
Non-Database files and
the backup's destination is a disk storage pools. The data on the disk storage 
pools are
migrated to a tape storage pools when the disk pools reach a predefined 
percentage utilization.
Our DBA's do an oracle archive every night and the archive's destination is the 
tape storage
pools. After all the backups and archive are completed, we copy the disk 
storage pools, and
the tape storage pools to a copy storage pools. Do we need to copy the disk 
storage pools to
the copy storage pools? I thought that because the data in the disk pools are 
migrated to the
tape when the disk pools reached a predefined threshold, that doing a disk pool 
copy to a
copy pools just copies duplicate data. In short, I'd like to restore our 
critical servers as
fast as I can. Out of the 15 servers we are backing up, we identified 8 
critical servers. Would
it be better if I create a separate disk storage pools for incremental backup 
and separate
tape storage pool for archive for the critical servers and then copy the 
critical servers pools
to a separate copy storage pools. I'm guessing that when we do this we may have 
the same number
of tapes to restore ALL servers but a little less when we just want to restore 
the CRITICAL
servers. Am I making any sense? Apologies for this long posting.

Thanks In Advance for any help.

Regards,
Ron
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