Oracle-L: RE: RAID5+

From: Brooks, Russ <Russ.Brooks_at_dayzim.com>
Date: Tue, 29 Oct 2002 05:48:48 -0800
Message-ID: <F001.004F616A.20021029054848@fatcity.com>

Thanks Greg. I'd be very interested in what you find. To address the other responses,
1. the raid-1 configuration had 24 mirrored disk sets (48 spindles total). The raid-5 configuration also had a total of 48 spindles. 2. I'll be glad to send the whitepaper to anyone who requests it.

Russ

-----Original Message-----
Sent: Tuesday, October 29, 2002 7:47 AM
To: Brooks, Russ

Russ-
The hardware architects within our shop have pointed out similar performance information to me...

We are using HDS 9960 boxes, and the file systems will be setup as a RAID5 on the SAN as compared to RAID0+1 on the EMC frames that we have.. I believe the RAID5 issue is related on to aHDS disk sub-system..

I'm trying to get some info from our HDS rep now.....

greg

-----Original Message-----
Sent: Monday, October 28, 2002 5:24 PM
To: Multiple recipients of list ORACLE-L

Hi,
I just got forwarded a whitepaper from Hitachi and Oracle, that compairs raid 5+ and raid 1 using the TPC-C benchmark test suite. The claim is that raid 5 is as fast or faster. While I'm waiting for a comparison or raid 5+ with raid 0+1, I thought I'd take a poll with the list. The benchmark is using the Hitachi 7700E.
Has anyone heard other recommendations attributed to Oracle that are pushing raid 5+ as the configuraton for "unrivaled performance"? Has new disk technology changed the general conception that raid 0 or 0+1 provides better performance than other raid levels?

Thanks,
Russ

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Author: Brooks, Russ
INET: Russ.Brooks_at_dayzim.com

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