HP StorageWorks RAID Manager XP user guide (T1610-96005, March 2006)

80 HP StorageWorks Disk Array XP RAID Manager: User’s Guide
RM instance environment variable
The $HORCMINST variable specifies the RM instance number when
operating two or more RM instances on a single server.
You must specify an instance number in the command execution
environment and the RM activation environment.