Intel SGI Altix 450 - Manual (Page 88)

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2: Operation Procedures
1 volume is active, 2 physical disks are active
Volume 0 is Bus 0 Target 0, Type IM (Integrated Mirroring)
Volume State: optimal, enabled
Volume Settings: write caching disabled, auto configure
Volume draws from Hot Spare Pools: 0
Volume Size 139898 MB, Stripe Size 0 KB, 2 Members
Primary is PhysDisk 1 (Bus 0 Target 56)
Secondary is PhysDisk 0 (Bus 0 Target 1)
For information on the two RAID 1 disks, use the lsscsi command as shown in the following
example:
# lsscsi
[1:0:0:0] disk SGI ST3146854SS X422 - /dev/sg2
[1:0:1:0] disk SGI ST3146854SS X422 - /dev/sg3
[1:1:0:0] disk LSILOGIC Logical Volume 3000 /dev/sdc /dev/sg4
This is an example of what you'll see on SLES10 or RHEL5 Linux operating systems. Disk
[1:0:0:0] and [1:0:1:0] are the individual drives in the RAID 1, but you cannot access them through
the disk driver. You access [1:1:0:0], which is /dev/sdc in this case. Caution must be exercised
when entering Linux SCSI generic (sg) commands via the sg devices.