Having used the first SCSI drive of 20MB on an Amiga computer, I am now using a Tyan server board with an Adaptec/Microsemi RAID 6805E SAS controller and two Seagate 15K Cheetah 300GB SAS drives. This is my third Tyan server board and about the fourth generation of Adaptec controller I am using. Always used Seagate drives and never had any problems. Until now.
With the 300GB drives creating SMART errors, I bought two --> Seagate 21/2” 600GB Enterprise Performance SAS 12Gbs 10K RPM drives [ST600MM0018].
These drives appear not to spin up at all; Seagate accepted this and replaced them. Same result: the controller will not recognize them; but I still perceive they are not actually spinning up, so, of course, the controller will not see them.
Seagate now basically argues to get 15K drives to match what is there now, which is entirely missing the point.
Adaptec/Microsemi offered much more constructive input. This lead to an update of the controller firmware, the Windows driver and installation of MaxView web-based interface. Adaptec also confirmed that neither the speed difference nor the throughput capacity of 12bBit of the new drive versus the controller's lower capability of 6gBit would prevent the drives from being used.
Substituting one drive or both always produces the same result - failure to see the new drive or drives. As soon as the old configuration is hooked up again, all works fine. And the drives are always connected to the same pair of connectors for power and data.
Would anyone have any idea on why these drives will not spin up. I am ruling out that both replacements are also faulty. And I have no other option to test them.