How to identified a SAS IR volume
The following document clarifies the meaning of the "HP IR Volume" identification string on an "ioscan" output. Latest Integrity servers like the rx6600 supports Serial Attach SCSI (SAS) controllers. Those controllers can be configure to address each indiviual SAS disk as a individual device or in RAID 0 or 1 configuration. When configure as RAID volumes, the volumes recieve the identification string "HP IR Volume", were IR stands for Integrated Raid.
Using ioscan, is rather simple to determinate the SAS controller that provied access to the IR Volume, that will be always like "/dev/sasd#" above the disk output. For example:
# ioscan -fn Class I H/W Path Driver S/W State H/W Type Description ==================================================================================== ... ba 5 0/4 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (122e) slot 4 0/4/1 pci_slot CLAIMED SLOT PCI Slot escsi_ctlr 0 0/4/1/0 sasd CLAIMED INTERFACE HP PCI/PCI-X SAS MPT Adapter /dev/sasd0 ext_bus 2 0/4/1/0.0.0 sasd_vbus CLAIMED INTERFACE SAS Device Interface target 9 0/4/1/0.0.0.0 tgt CLAIMED DEVICE disk 2 0/4/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP IR Volume /dev/dsk/c2t0d0 /dev/dsk/c2t0d0s2 /dev/rdsk/c2t0d0 /dev/rdsk/c2t0d0s2 /dev/dsk/c2t0d0s1 /dev/dsk/c2t0d0s3 /dev/rdsk/c2t0d0s1 /dev/rdsk/c2t0d0s3 ...
To verified the configuration of the SAS controller and it's logical and physical devices, use the "sasmgr" command. For example:
# sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate RAID VOL ID is 7 : /dev/rdsk/c2t0d0 0/4/1/0.0.0.0.0 Physical disks in volume are : 1 7 OFF HP DG072BB975 HPDA 1 8 OFF HP DG072BB975 HPDA