How to identify a SAS IR volume

I was just alerted on a problem our BL870C is having which is running HP-UX 11.2 3 (ia64) This server has SAS disks in it which are configured for Raid-1.

We have two RAID-1 Logical Volumes. I see one of the two Logical Volumes is showing degraded and it looks as though one of the disks in this RAID set is having an issue.

See sasmgr get-info below:

---------- LOGICAL DRIVE 3 ---------- 
 
Raid Level                                         : RAID 1 
Volume sas address                                 : 0x2b4651b61bbc323 
Device Special File                                : /dev/rdsk/c0t3d0 
Raid State                                         : OPTIMAL 
Raid Status Flag                                   : ENABLED 
Raid Size                                          : 139136 
Rebuild Rate                                       : 20.00 % 
Rebuild Progress                                   : 100.00 % 
 
Participating Physical Drive(s) : 
 
SAS Address         Enc   Bay   Size(MB)      Type            State 
 
0x5000c5000b16dbc1   1     4    140014        SECONDARY       ONLINE 
0x500000e01ad69a02   1     3    140014        PRIMARY         ONLINE 
 
---------- LOGICAL DRIVE 1 ---------- 
 
Raid Level                                         : RAID 1 
Volume sas address                                 : 0x862c5db8fa3ccfd 
Device Special File                                : /dev/rdsk/c0t2d0 
Raid State                                         : DEGRADED 
Raid Status Flag                                   : ENABLED 
Raid Size                                          : 139898 
Rebuild Rate                                       : 20.00 % 
Rebuild Progress                                   : 100.00 % 
 
Participating Physical Drive(s) : 
 
SAS Address         Enc   Bay   Size(MB)      Type            State 
 
0x500000e01ad40e32   1     1    140014        PRIMARY         ONLINE 
0x500000e01ad6ced2   1     2    140014        SECONDARY       FAILED