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According to IBM Support just stopping and restarting RAID (after moving) will not work. Drives must be reformatted.

I ended up replacing the 5805s with 5913s.

-----Original Message----- From: Steve Pavlichek
Sent: Thursday, February 04, 2016 10:09 AM
To: Midrange Systems Technical Discussion
Subject: Re: RAID adapters

This is what I was looking for.

Upgrading a SAS Raid Storage adapter
The PCIe2 and PCIe3 SAS Raid adapters add the industry standard T-10 Data Integrity Fields (DIF) for superior data protection. The T-10 DIF attaches three fields to each data block. During the operation, the DIFs can be checked at different points to detect data corruption or inappropriate use. When upgrading from PCI-X and PCIe SAS Raid storage adapters (which did not utilize the T-10 DIF fields) to PCIe2 or PCIe3 SAS Raid storage adapters, an automatic conversion process is performed to generate the T-10 DIFs on each data block. Once this conversion is performed, the devices are not usable on the previous PCI-X or PCIe SAS Raid storage adapters unless they are reformatted.

This is still relevant as the 5805’s are PCIe(1) and all other currently available RAID adapters are PCIe3.

-----Original Message----- From: Steve Pavlichek
Sent: Wednesday, February 03, 2016 5:44 PM
To: Midrange List
Subject: RAID adapters

Question for the hardware guys. I remember reading a while ago that starting with a certain model RAID adapter that the stripping was slightly different and that once you had drives attached to this adapter you could not move the RAID set to an older generation adapter. The drives would have to be restriped. Does anyone have documentation as to which adapters support which stripping method?

Thanks

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