RE: adding disks

Its allowable (but not recommended) to have different size disks on the same
controller, but if you are doing RAID on that controller, you must have
enough disks of each type of make a raid set. Preferably at least 4 of each
type.

Pete

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Dave Snyder
Sent: Friday, February 29, 2008 9:41 AM
To: Midrange Systems Technical Discussion
Subject: RE: adding disks

So different size disks on the same disk controller is ok?

Dave

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-
bounces@xxxxxxxxxxxx] On Behalf Of Chris Bipes
Sent: Tuesday, February 26, 2008 2:43 PM
To: Midrange Systems Technical Discussion
Subject: RE: adding disks

You cannot have disk in different physical units in the same RAID set.
They must be connected to the same disk controller. You can have disk
in the same unit and on the same RAID controller, in different ASP's.
That is not a problem. If you are isolating for non-production work, a
separate ASP is good practice. However make sure you have enough ARMs
to handle the test and research work load.

Chris Bipes
Director of Information Services
CrossCheck, Inc.

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