I recently added an MD1200 expansion shelf to our MD3800i SAN (enclosure 1). The MD1200 has 12 8TB near line SAS disks and I would like to configure the entire shelf as a single disk pool.
the problem .... despite creating the pool manually, no matter what I do, it will not allow me to use disk 11 (the 12th disk). It stays unassigned. The disk shows optimal and in no way does it appear defective.
I have another MD3800i, with 12 8TB disks in enclosure 0 and it is able to use all 12 disks.
Is it possible the problem is related to the fact that enclosure 0 on the MD3800i with the problem is configured as a disk Group, not a pool and that the disk group has a hot spare configured? Does it show how think it needs to reserve the disk in enclosure 1 for hot spare coverage for the disk group? it does not show as being used fro hot spare ,,, but ,,,,
Scratching my head on this one.