Asset ID:	1-72-1309987.1
Update Date:	2011-05-06
Keywords:

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Solution Type  Problem Resolution Sure

Solution  1309987.1 :   VSM - Failed Disk Drive (HDA) FSCs  

VTSS. Virtual Tape Storage Subsystem. In VSM, a backend

In this Document
  Symptoms
  Cause
  Solution

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Created from <SR 3-3313062461>

Applies to:

Sun StorageTek VSM System - Version: 4 to 5C - Release: 4.0 to 5.0
Sun StorageTek V2X SVA Disk System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
IBM z/OS on System z

Symptoms

Multiple Fault Symptom Codes, FSCs, occur for the same failed disk drive (HDA) on the same VSM serial number.  The following FSCs may be associated with a failed disk drive:

FSCD01D CC_SCSI_HW_ERROR
FSCD057 TI_FCAL_IOCB_PORT_LOGGED_OUT
FSCD082 FSC_CC_SCSI_WRITE_FAULT_MEDIA_ERROR_RETRY
FSC3E00 DRIVE_FAILURE
FSC3E01 DRIVE_RECONSTRUCTION_BEGUN
FSC3E02 DRIVE_RECONSTRUCTION_COMPLETE
FSC3E61 1_SPARE_REMAINING
FSC3E60 NO_SPARES_REMAINING
FSC3E61 1_SPARE_REMAINING
FSC3E62 2_SPARES_REMAINING
FSC7342 SNS_2_BROKEN_BACKEND_DRIVES
FSC79EE PSA_ASYNC_FENCE

Cause

If the failed drives are replaced in a timely manner, a fenced disk drive is not typically a loss of service from the VSM hardware.

The impact is minimal as spare drives are typically available.  Spares, devices not logically associated with an array, are used to automatically reconstruct and logically replace failed drives.  A background function recreates and rewrites the data from a failed device to a spare device.  The timeframe of the reconstruction depends on the amount of data on the drive and the workload on the VSM.  The reconstruction must complete prior to the replacement of the failed device.

Solution

Automatic service alerts will be generated if SDP and MOS are activated with the associated serial number for the VSM.  Service requests will be opened with the associated disk drive failure. 

If duplicate service requests are opened for the same serial number and disk drive, one will be worked and the others will be closed.

If a service request is to be opened, then note:
1.  Serial number for the VSM.
2.  Severity as 3 unless critical hardware circumstances exist (multiple disk drive failures at one time).
3.  Timeframe for the field engineer to be scheduled onsite (if known).

During the service request being worked, a field task will be created and a field engineer will be dispatched.  The required parts will be ordered, and then the field engineer will schedule to be onsite.





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