Windows Device Manager should pick it up as 'Unknown Medium Changer'. No need for any driver installation.
Verify partitioning config.
See this section in the
User Guide:
FC-SCSI Host-Partition Connections
An FC-SCSI partition can have one or more host-partition connections. The host-partition connection configuration is user-defined and consists of the following information:
■ World Wide Port Name of the FC-SCSI host bus adapter
■ Port number of the library Fibre Channel card
■ Logical unit number (LUN) of the partition on the host
See “Configure a Host-Partition Connection” on page 213 for detailed instructions on defining this information.