Hi Richard,
I guess you are using host based raid configuration through software.
Anyway, RAID-5 volumes will incur lot of cost for writes and
syncing if some failure occured. Besides that, they consume lot of
memory resources (normally double that that of a mirrored/stripoed
volume). So, definitely we always have peformance benifit using in
RAID 0 and RAID 1. Since, mirroring is done, you do acquire
redundancy.
Besides that RAID-5 does not ensure redundancy if failure occurs
on more than one column.
Hope the above helps.
-Thanks,
Saradhi.
> I contacted my software vendor regarding their recommendation on the
> configuration of 4 drives that will hold their software. I was originally
> thinking of using four disks in a RAID 5 configuration. However, they
> reported that they had seen better results with setting up two disks in a
> RAID 0 configuration and then using the other two disks to mirror the disks
> that were stripped. Any thoughts about this?
> Thank...Rich