I think either is fine, depending on your needs and throughput requirements.
WHen we started out I had the DB on RAID5, and just mirrored the logs, to
save space.
As we grew, performance on the DB became an issue, so we bought more disk
and switched to physical mirroring on the DB and logs to pick up speed.
We don't mirror or RAID the disk pools, since everything gets flushed to
tape and copied to the copy pool each night. (If we lost a diskpool volume
the data would be picked up again on the next backup.)
SO whatever works for you, is OK, as long as the data base is protected and
you have enough speed. With a 115 GB TSM DB, I would be concerned about how
much longer EXPIRE INVENTORY would run, if you put the DB on RAID 5. But
again, if you aren't having time/performance constraints, go for it...
-----Original Message-----
From: Anuvinder Chauhan [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 22, 2001 7:57 AM
To: [EMAIL PROTECTED]
Subject: RAID5 Vs Mirroring
Hi All,
Currently we are running AIX over RS/6000 with TSM on top of it.This
is further integrated to the IBM 3494 library.
In the current scenario we have mirroring implemented only for the TSM
database .I want to built in more redundancy therefore planning to go
for RAID 5 implementation.There is no redundancy for the data backed
up by the storage pools.Size of the database is around 115GB.
I would like to know does going in for RAID 5 is a wise decision and
what are the implications involved.
Regards
Anuvinder Chauhan
System Administrator
ST Microelectronics Ltd.
INDIA.
