Hi All, I have a Sun Ultra 2 running RedHat 6.0 with all the updates etc. I have successfully been running RAID5 on it with the following: Sun D1000 with 12 4.2G drives, seperated into 2 clusters of 6 each... this is on a single SCSI interface. I mount the 2 md devices and have no problems. To increase the speed, I added a second SCSI board and divided the D1000 into 2 6 disk sections... one off each controller. The kernel see's them, the /proc/partition has them in there ok, but raidtools will only mount one set of the 6 disks... When I try to perform raidstart /dev/md1 it drops out and says error /dev/md1. If I swap the SCSI cables, it mounts the other 6 as /dev/md0. Is Linux's MD driver limited to a single SCSI adapter or am I missing something? I have now upgraded to kernel 2.2.11 and loaded the raid patch for it and I get the same results... Raidtools is 0.90, the latest available... got them at the same time I got the kernel and the raid patch. Any and all help appreciated! Thanks, Dave =========================================================== David Cooley N5XMT Internet: [EMAIL PROTECTED] Packet: N5XMT@KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068 Sponges grow in the ocean... Wonder how deep it would be if they didn't?! ===========================================================