DETECTION PROBLEMS AFTER INSTALLING A SAS
DRIVE
Problems encountered after installation are often caused by improper SAS cable
connections, storage management software configuration errors, or operating system
configuration errors. If the storage management software or operating system does
not communicate with the library after installation, determine the extent of the
detection problem:
• Does the storage management software detect the tape drive?
• Does the storage management 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 storage management software nor 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 at both ends.
• 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 and qualified with the
library.
• Verify that your HBA has the latest firmware.
• If the storage management 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
assembly (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 disabled, the host computer can see the tape drive,
but not the library.
Note: Many RAID or array controllers do not provide multiple LUN support.
JANUARY 2023 214
SPECTRA STACK LIBRARY
USER GUIDE
CHAPTER 8 - LIBRARY TROUBLESHOOTING
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