I'm not a expert on IBM stuff, but I had a similar problem which almost turned me crazy.
For me was the problem that the power supply of the computer was after the power surge somehow changed, the motherboard did function normal. But when I try to connect my hard drives it did not see them or I get weird errors.
Most IBM M10 server have only a 350 Watt power supply, this with two SCSI raid cards connected to 4 SCSI hard drives can be maybe a bit to much for a power supply.
My advice is check the power supply........