Hello all,
I am also having the exact same issue as blackmesa w/ a Xseries 346 Server w/ 7K RAID card.
My raid arrays are:
2 U320 SCSI 10K 74 GB drives in RAID1
4 U320 SCSI 15K 36 BG drives in RAID5 8K stripe
Spoke w/ IBM regarding channel configuration...apparently all drives must remain on...