RAID Installation Guide
Page 11
... RAID Utility - M M: Master S: Slave Controller Channel - M Channel 1, controller 0, Master 1 . 1 . Depending on the platform used for Parallel ATA drives while channel 1 is used , the system can review the RAID arrays that you can have set up. The adapter / channel / master / slave status of the Free Disks and Array Disks lists.
... RAID Utility - M M: Master S: Slave Controller Channel - M Channel 1, controller 0, Master 1 . 1 . Depending on the platform used for Parallel ATA drives while channel 1 is used , the system can review the RAID arrays that you can have set up. The adapter / channel / master / slave status of the Free Disks and Array Disks lists.