EXCERPT from "Implementing Raid On Oracle Systems" by Gaja Krishna
Vaidyanatha, Quest Software Inc. :-
"RAID 1 - Ideal for online and archived redo logs, Leaves the write-head
at the location of the last write. On most systems, you will need 3
volumes for the online redo logs (for 3 groups) and 1 volume for the
archived redo logs. If your database is in NOARCHIVELOG mode, you
probably can get away with a single RAID 1 volume for your redo-logs.
However, for databases in ARCHIVELOG mode you will need to further
separate you"
Qs. Puttting an Online Redo log on a RAID1 Volume ( Volume Containing 1
Disk Mirrored to Another Disk ) versus putting the Same Online redo file
on a Single Disk (NON-Mirrored) , which would give Better performance ,
Why ?
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Received on Wed Nov 14 2001 - 17:36:03 CST
