• The cable is not plugged in correctly. Check that it is connected correctly to Port A of the tape drive.
• The cable is damaged. FC cables are delicate. If the cable has been bent or twisted sharply, it might
be broken and must be replaced.
If the screen shows ALPA Conflict:
There might be a conflict with the ALPA address on Loop ports. Select Soft for the Loop mode to allow the
system to select an available address each time the tape drive connects to the FC fabric. If your server
configuration does not support changing addresses, try using the Hard Auto-Select option for the Loop
mode. This option allows the system to select an available address when it first connects, and then retain
that address for future connections.
Detection problems after installing a SAS drive
Frequent causes of SAS detection issues
• Improper SAS cable connections
• Application software configuration errors
• An incorrectly configured operating system
If the application software or operating system does not communicate with the library after installation,
determine the extent of the detection problem:
• Does the application software detect the tape drive?
• Does the application software detect the library?
• Does the operating system detect the tape drive?
• Does the operating system detect the library?
• Does the operating system detect the library, but list it as a generic device?
Based on the extent of the detection problem, check the following:
• If neither the application software or operating system detects the tape drive, or they do not detect
both the tape drive and the library:
◦ Verify that all SAS cables are securely connected on both ends. If the mini-SAS connectors that
connect to the tape drive and some HBAs will not plug in, check the key. 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 6 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 and qualified with the library.
Detection problems after installing a SAS drive
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