T149: Key Path Diagnostic Delay
Description The library is unable to initiate a background Key Path Diagnostic to an
EKM server.
Explanation The library attempted to perform a Key Path Diagnostics to an EKM server,
but a tape drive has not been available with the proper prerequisites, such as
being ready and unloaded. This ticket conveys the fact that the test could not
be performed within the selected test time period which is determined by the
configured test time interval multiplied by the configured test warning
threshold.
Detection Scenarios The library attempted to perform a Key Path Diagnostics but did not succeed
in initiating the test within the configured test warning threshold due to a
tape drive not being available to allow the test to run.
Root Causes
v IBM LTO tape drive or drives are still loaded, preventing the library from
initiating a Key Path Diagnostics via a tape drive.
v IBM LTO tape drive or drives are not ready, preventing the library from
initiating a Key Path Diagnostics via a tape drive.
Resolution Perform “T118: Degraded Robotics Flash” on page 6-48.
T153: Drive Encryption Control Failure
Description GUI Description: A tape drive failed to enable or disable Library Managed
Encryption (LME).
Explanation: The drive sled controller firmware commanded the drive to
enable or disable library managed encryption for the drive, yet the drive
failed to perform the requested operation.
Detection Scenarios
v Library control firmware received a drive sled event,
E_DDC_LME_ENABLED, indicating that the tape drive did enable Library
Managed Encryption, but the library requested that the drive configure for
Application Managed Encryption (AME).
v Library control firmware received a drive sled event,
E_DDC_LME_DISABLED, indicating that the tape drive did not enable for
Library Managed Encryption, but the library requested that the drive
configure for LME.
Root Cause Library control firmware was informed by drive sled of a tape drive
command failure.
Possible FRU Replacement Drive Sled
Resolution Perform “DR110: Resolve Drive Encryption Control Failure” on page 6-92.
T154: Drive Encryption Monitoring Warning
Description GUI Description: A tape drive request to initiate a library managed
encryption key exchange did not provide the required request details to
service the encryption key exchange request.
Explanation: The drive sled controller firmware suspended Encryption
Service Request (ESR) monitoring of the tape drive, due to the tape drive
having indicated an ESR, but when the drive sled controller firmware
requested details from the tape drive, no data was provided. If this issue is
encountered twice in a row, ESR monitoring will be suspended for the
duration of the drive mount session and will be re-enabled when a new tape
cartridge is mounted.
Chapter 6. Service Action Tickets (Txxx) and Diagnostic Resolutions (DRxxx) 6-59
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