HELP: RAID-5 Killing Performance

We're running Oracle 8.0.5 on Solaris 2.6. Our database server is a Sun UltraSparc I 333MHz with 1GB of RAM. We have several disks, a RAID-5 array, and a local tape device.

My DBA is utilizing the disks in the following manner:

disk1 - os
disk2 - home

disk3 (mirrored) - archived redo logs
disk4 (RAID-5) - control file, system, temp, oracle software
disk5 (RAID-5) - control file, rbs, redo logs
disk6 (RAID-5) - control file, tools, users, redo logs

My largest concern is that having the redo logs on RAID-5 has got to be killing my performance. Ideally, they should be on a dedicated set of mirrored drives (then again, ideally I should have 22 separate disks, yeah). However, my DBA feels that its more important to have the archive logs on the dedicated mirrored disks.

Anyone care to share their opinion as to how we might make better use of the above hardware setup? Would it make sense to write archive logs directly to tape and move the redo logs to the mirrored disks?

Thanks in advance,

Chris Received on Tue Sep 14 1999 - 13:18:31 CDT