Oracle and Raid 5

From: Steve Jelle <jelles_at_ih74.ea.unisys.com>
Date: 1996/11/19
Message-ID: <56sj88$kjt@ih96.ea.unisys.com>#1/1

I have recently read a document from Oracle (108735.493 Overview of RAID and ORACLE). This article leads me to believe that RAID 5 should not be used with Oracle. It comments that RAID 3 should be used instead of RAID 5 for write intensive files. This comment confused me because I thought the only difference between RAID 3 and RAID 5 was the that the parity was also striped. I could not see any logic for this recomendation.

Most of our production databases are mirrored and striped, but we were considering using RAID 5 on a few new databases.

I also realize that files that are mainly accessed sequentially (such as redo and TEMP) perform better in a NON-RAID arrangement, but I am interested in information concerning Oracle and RAID.

Does anyone have any comments concerning RAID 5, or RAID 3 and Oracle.

Thanks,
Steve Jelle Received on Tue Nov 19 1996 - 00:00:00 CST