HP LTO Ultrium 4 drives technical reference manual, volume 2: software integration 17
HP restricted
Since LTO 4 drives cannot write to Ultrium-2 media, the WRTOK bit will be clear for this media
type.
Support for additional LUN
Enabling additional LUN support
When enabled by an internally-connected autochanger device, an extra Logical Unit Number (LUN)
will be available at the target’s SCSI ID. This allows the attached autochanger device to be
addressed via the tape drive. See ”Automation interface” on page 35. For ADI Bridging usage, the
automation LUN will usually be LUN1.
No other LUNs are available on the drive, although HP is looking to provide new functionality
through the use of additional LUNs in future products.
Supporting additional LUNs
When working with a library vendor who is incorporating HP Ultrium drives in products, software
developers should liaise directly with the vendor about the functionality of the hardware available
through the ADI or ACI.
