Re: RAID-5 of 4x IBM IC35L073UCDY10 incompatible with SEAGATE ST373207LC

From: John-Paul Stewart (jpstewart_at_binaryfoundry.ca)
Date: 05/03/05 

Date: Tue, 03 May 2005 10:34:38 -0400

Victor Mataré wrote:
> Hi,
>
> I'm running a RAID-5 of 4x IBM IC35L073UCDY10 on an ICP Vortex GDT8514RZ
> SCSI/RAID-Controller, firmware 2.44.02-RC7B (current). It is to be
> expanded by 2 SEAGATE ST373207LC, but the expand command in the
> controller's console fails with the message "no suitable disks found".
> This seems to be due to a compatibility issue of the IBM drives. The IBM
> support doesn't seem to be of much help - the firmware update (S29A)
> they sent me made no difference.
> If anyone has experience with expanding RAID arrays of IBM disks or
> similar situations, please tell me...

Some RAID controllers simply refuse to work unless all drives are
identical brand and model. I don't think it's a compatability issue
with the IBM drives so much as it's an issue with the controller. Check
with the controller manufacturer for information; there's a chance they
might have a workaround (if this is indeed your problem).