T10000A and T10000B - Stiction Issues

Asset ID:	1-72-1991043.1
Update Date:	2018-05-02
Keywords:

Solution Type Problem Resolution Sure

Solution 1991043.1 : T10000A and T10000B - Stiction Issues

Applies to:

Sun StorageTek T10000A Tape Drive - Version All Versions to All Versions [Release All Releases]
Sun StorageTek T10000B Tape Drive - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Stiction related perm errors on T10000A and T10000B tape drives.

FSC: 5809   SRV_FSC_UNWIND_RECOVERY_STALLED_EARLY
FSC: 5904   REEL_CTL_FSC_FILE_AMP_SATURATED
FSC: 5905   REEL_CTL_FSC_MACHINE_AMP_SATURATED
FSC: 591D   REEL_FSC_TAPE_STUCK_IN_TAPE_PATH
FSC: 5920   REEL_FSC_SOFT_STICTION_DETECTED
FSC: 5921   REEL_FSC_HARD_STICTION_DETECTED
FSC: 5922   REEL_FSC_VELO_DIFF_STICTION_DETECTED
FSC: 5923   REEL_FSC_MACH_AMP_SAT_STICTION_DETECTED
FSC: 5924   REEL_FSC_FILE_AMP_SAT_STICTION_DETECTED
FSC: 5925   REEL_FSC_MACH_UNDER_VELO_STICTION_DETECTED
FSC: 5926   REEL_FSC_FILE_UNDER_VELO_STICTION_DETECTED
FSC: 5928   REEL_FSC_MACHINE_REEL_STUCK_DURING_UNSLACK
FSC: 5929   REEL_FSC_FILE_REEL_STUCK_DURING_UNSLACK
FSC: 592F   REEL_FSC_EXCESS_REEL_MOTION_IN_STICTION_RECOVERY
FSC: 5931   REEL_FSC_EXCESS_SLACK_STICTION_DETECTED
FSC: 5932   REEL_FSC_BRAKING_SETTLE_TIMEOUT
FSC: 5933   REEL_FSC_STICTION_AVOIDANCE_WARNING
FSC: 5941   REEL_FSC_PULLING_REEL_STICTION_DETECTED

Cause

Tape stiction problem. This is caused by the tape getting stuck to the drive heads.

Solution

For any of the above stiction related FSCs (as a permanent error) do the following:

1. Ensure that the drives are running at 1.48.x05 code. (or higher)

2. Determine which tapes are involved. Check the history of the failing tapes to see if they are failing on other drives as well. If the tape is failing on other drives then this is a media problem. This can be accomplished using host logs or by using STA.

3. If the drive experiences 4 or more perm errors on unique tapes then this SR needs to be sent to an L2 Domain rep for drive replacement verification.

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