Feb 02, 2012 Ok, I've inherited 3 x xSeries 386 IBM Servers. On one of them ServeRAID Manager v7.10.18 (731) is installed which is great, I can get alerts if any of the drives is about to fail etc.
- Two notches in the PCI connector (versus four notches in the ServeRAID-5i) Notes: The 6i and 6i+ are physically identical adapters. The only difference is that the 6i+ is flashed at the factory to V7.0 firmware to support the x206 and x306. A ServeRAID-6i+ is supported in servers that support the ServeRAID-6i.
- IBM's technical support resource for all IBM products and services including downloads, fixes, drivers, APARs, product documentation, Redbooks, whitepapers and technotes. IBM ServeRAID software matrix - IBM Support.
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We have an IBM xSeries 345 server with a ServeRAID-5i controller which is starting to report problems. We also have a couple of 'retired' x345s with ServeRAID-6i or 6i+ controllers in them.
Is it feasible/safe (re existing data) to move the drives from the x345 with the failing 5i to a x345 with a 6i(+) in it? Are these controllers sufficiently compatible to do that without data loss?
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2 Answers
Both controllers are based on LSI 1030 chipset and there will be 100% HW compatibility. Metadata is stored across the members of the array. You will need to activate RAID volumes from controller BIOS during bootup. Controller won't erase anything unless you want to do that or you set it up so, but anyway, there is no 100% guarantee for data loss prevention. I'm sure disks are low-capacity disks, so it's easy to backup them if you can get couple hours for maintenance window.
Will it boot OS? Some guys are reporting problems booting Windows after this procedure.
What are reported problems? Disks must be very old already, and failing... Got SMART status?
Update:Also, there are Adaptec-based ServeRAID-6i controllers (CARDS). This one is incompatible with LSI metadata format.
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LSI1030 is a SCSI chip on planar. 5i and 6i are zero-channel RAID cards on top of it. Both have i960 series chips on them, hence the driver name nfrd960.sys.Metadata is compatible, 6i can import RAID config from 5i. But cards have different PCI ID values, so Windows may not be able to cope with the change, as it ties the boot volume with controller PCI ID. Chances are better when Windows already knows 6i and has driver configured for it (6i may be present in another PCI slot, it just cannot communicate with onboard SCSI from there).