Re: RAID Level 5 and RedoLog-Files

"Helmut Hahn" <hhahn_at_tmt.de> wrote:

>We plan to set up an Database for a universal research center on NT4.0 with
>RAID 5.
 
>The question is how such a RAID should be configuered. Must RedoLogFiles be
>holded twice or more, or is it sure enough to reley on the RAID system and
>setting up only one.
 

>Or should the RAID be configuered to act like two seperate devices and set
>up two LogFiles and having the chance to divide up the Tablespaces on these
>devices for performance issues?

Since RAID-5 suffers a large write performance hit, it would probably be better to implement Oracle mirrored redo logs to ordinary disks than to use RAID-5 disks since these are updated so frequently.

Mike

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