250 Troubleshooting the Tape Library
T053
Status: Added with firmware version 580.
T053 - Drive Unload Timeout
Description GUI Description: A tape drive did not successfully unload a tape cartridge
within the allotted time frame, preventing the robot from picking and moving
the tape cartridge.
Explanation: The library is expecting the drive to achieve an unloaded state
within 3 to 5 minutes of initiating the unload request, but the drive is still
rewinding and unthreading the tape. This RAS ticket is ONLY displayed if the
tape drive was actually instructed to perform an unload operation and the
drive did not respond with a successful or failed unload response within the
allotted time frame. In the case where the library controller code is
determining that the drive is still busy for a defined wait time period and the
unload request is not sent to the tape drive, this RAS ticket shall not be
generated, but rather the request to unload shall be denied as an illegal
request.
Note: The library will not wait for the maximum unload time defined by the
drive, since drives may take up to 18 minutes before succeeding or failing the
unload/eject operation. The library will only wait for 3 minutes before failing
the unload request.
Detection Scenarios • A SCSI Move Medium was issued, but the drive does not achieve an unload/
eject state within the allotted time frame after being instructed to unload and
eject.
• A UI command was issued to unload or move from a drive, but the drive does
not achieve an unload/eject state within the allotted time frame after being
instructed to unload and eject.
Root Causes The tape drive was instructed to unload the tape cartridge, but did not
complete the request within the allotted time frame.
Service Resolution
Steps
1 Perform DR006 - Resolve Unload Timeout
on page 369.
2 If possible, check the front of the tape drive for error indications.
Possible CRUs/FRUs Note: Read and perform all resolution steps before dispatching any parts.
Dispatch the first part listed below for replacement. If this does not solve the
problem, dispatch the second part, and so on, in order. Dispatch only one part
(or set of parts) at a time.
1Drive Sled
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