For current HBA compatibility information, see the compatibility matrix at: http://hpe.com/storage/
DAPRcompatibility
◦ Verify that your HBA has the latest firmware.
• If the application software or operating system detects the tape drive, but not the library:
◦ Verify that multiple LUN support is enabled on the HBA. The library uses two Logical Unit Numbers
(LUNs) to control the tape drive (LUN 0) and robotic (LUN 1). The library requires an HBA with
multiple LUN support and multiple LUN support must be enabled on the host computer. When
multiple LUN support is not enabled, the host computer can see the tape drive, but not the library.
NOTE:
Many RAID or array controllers do not provide multiple LUN support.
• If the application software or operating system does not detect any devices on the HBA:
◦ Verify that the SAS host adapter is installed correctly. For installation and troubleshooting
instructions, see the manual that came with your host adapter. Pay particular attention to any steps
describing configuration settings. Ensure that the host adapter is properly seated in the
motherboard slot and that the operating system correctly detects the host adapter.
◦ Verify that the proper device driver is installed for the SAS host adapter.
• If the library is detected by the operating system, but not by the application software:
◦ For instructions verifying proper installation, see the backup application documentation. Some
backup software packages require an additional module to communicate with the robotics.
• If the library is detected by the operating system, but is listed as an unknown or generic device:
◦ Make sure that the proper device driver, if applicable, is installed for the device. Check your
application provider website for the latest drivers and patches.
NOTE:
Many backup applications use their own drivers. Before installing a driver, make sure that it is not in
conflict with the application software.
If you continue to have problems with a SAS library, check the following:
• Ensure that the library is compatible with the SAS host adapter and backup application you plan to
use.
For a list of compatible SAS host bus adapters and application software, check with your SAS host
adapter manufacturer or backup application vendor, or see the compatibility matrix at: http://hpe.com/
storage/DAPRcompatibility
• Verify that your HBA is supported by the host computer and qualified with the library.
For current HBA compatibility information, see the compatibility matrix at: http://hpe.com/storage/
DAPRcompatibility
• Ensure that you are using a compatible, high-quality cable.
168 Troubleshooting tools, procedures, and information
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