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Cool. Lets say they are in different ASP's, but the date is far from critical. What advantage do they get now? Is it just some performance? Thanks, Larry Sorry about the subject slip! Larry Ketzes iSeries Senior System Administrator American Life Insurance Company One ALICO Plaza 600 King Street Wilmington, DE 19801 Phone: 302-594-2146 Mobile: 302-559-1631 Fax: 302-830-4524 Email: larry.ketzes@xxxxxxx -----Original Message----- From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Chris Bipes Sent: Thursday, February 01, 2007 10:02 AM To: Midrange Systems Technical Discussion Subject: New DASD configuration First of all please change the subject line when changing the subject of the message. I would not mirror some drives and raid-5 others unless they were in separate ASP's. Each ASP should have like drives with like configurations. It can really hurt performance if you start mixing drive speed, size, and raid configurations. Christopher Bipes Information Services Director CrossCheck, Inc. -----Original Message----- From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Ketzes, Larry Sent: Thursday, February 01, 2007 5:16 AM To: Midrange Systems Technical Discussion Subject: RE: HMC If someone was looking for good performance, but has been running into some dasd issues (running out of space), they decided to buy more dasd. No problem there, and they are running at Raid-5. What advantage do they get by configuring their new dasd at Raid-1 (mirroring)? Wouldn't that be a waste if they are already at Raid-5, and dasd has been an issue?
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