NEO S-Series Library Service Manual
Library Troubleshooting
10400666-005
©2015-20 Overland-Tandberg
16
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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.
SAS Troubleshooting
Frequent causes of SAS detection issues:
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Improper SAS cable connections.
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Application software configuration errors.
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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:
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Does the application software detect the tape drive?
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Does the application software detect the library?
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Does the operating system detect the tape drive?
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Does the operating system detect the library?
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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:
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If neither the application software or operating system detects the tape drive, or they do
not detect both the tape drive and the library:
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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 for 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.
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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.
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Check the SAS connectors for damage or debris.
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Verify that your HBA is supported by the host computer and qualified with the
library.
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Verify that your HBA has the latest firmware.
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If the application software or operating system detects the tape drive, but not the
library:
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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 robotics (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.
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If the application software or operating system does not detect any devices on the HBA:
