Re: Q: Is RAID/striping good with Oracle???

Bruce Pihlamae wrote:
>
> Striping is what we call RAID1.
>
(lots of lines deleted)

No. Striping is RAID 0. RAID 1 is mirroring.

>
> RAID5 is NOT A PERFORMANCE option. RAID5 with LOTS of disk cache is ok but you
> hit the scsi overload problem.
>
> RAID0+1 will give more flexibility, better performance and as good reliability.
>

Correct. If your system is so critical that it requires 24x7 access, then the extra expense of RAID 0+1 shouldn't be too hard to justify. If you don't require 24x7 access and can't afford RAID 0+1, then just use RAID 0 (pure striping) and let Oracle mirror the redo logs. Unless you don't care or don't need good write performance in which case you might still want to look at RAID 5.

Vince Received on Thu Aug 22 1996 - 00:00:00 CEST