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make sure that the connectors are oriented in the correct alignment. The mini-SAS
connector on the tape drive is keyed at location four, which is the standard location for end
devices. If the connector on the cable is keyed in a different location, not only will the
connector not plug in, but the cable probably will not work.
•
Check the length and integrity of your SAS cabling. For reliable operation, do not use a SAS
cable longer than six meters. Do not use a cable adapter or converters between the HBA and
the library.
•
Check the SAS connectors for damage or debris.
•
Verify that your HBA is supported by the host computer.
•
Verify that the SAS host adapter is installed correctly. Refer to the manual that came with
your host adapter for installation and troubleshooting instructions. Pay particular attention to
any steps describing configuration settings. Make sure that the host adapter is properly
seated in the motherboard slot and the operating system correctly detects the host adapter.
•
Verify that the proper device driver is installed for the SAS host adapter.
•
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 library (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 library is detected by the operating system, but not by the application software:
•
Refer to the documentation included with your backup application for instructions on how to
verify proper installation. 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
software provider's website for the latest drivers and patches.
NOTE
Many backup applications require their own drivers. Before installing a driver,
make sure 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 backup application you plan to use.
•
Verify that your HBA is supported by the host computer and qualified with the library.
•
Ensure you are using a compatible, high-quality cable.