Sun StorEdge[TM] 6130: Disk reports a status of "Predictive Failure"

Asset ID:	1-72-1006476.1
Update Date:	2010-08-25
Keywords:

Solution Type Problem Resolution Sure

Solution 1006476.1 : Sun StorEdge[TM] 6130: Disk reports a status of "Predictive Failure"

Related Items


Sun Storage 6130 Array

Related Categories


GCS>Sun Microsystems>Storage - Disk>Modular Disk - 6xxx Arrays

PreviouslyPublishedAs
209071

Symptoms
A disk within an SE6130 array reports a status of "Predictive Failure", e.g.

Sun Storedge[TM] 6130 Configuration Service GUI :

Physical Storage -> Disks,

Name 	Tray 	Role 		Virtual Disk 	State 	Status 			Capacity 	Type 		Firmware

t0d03 	0 	Data Disk 	1 		Enabled Predictive Failure 	68.366 GB 	Fibre Channel 	0407

Sun Storedge[TM] 6130 Configuration Service CLI :

# /opt/se6x20/cli/bin/sscs list -a my-se6130 disk t0d03
Tray: 0    Disk: t0d03
Capacity:       68.366 GB
Type:           Fibre Channel
Speed (RPM):    10033
Status:         Predictive Failure
State:          Enabled
Role:           Data
Virtual Disk:   1
Firmware:       0407
Serial number:  3HZ7MTKD00007451GCY2
WWN:            20:00:00:0C:50:EB:EF:49

and Sun Storage Automated Diagnostic Environment (StorADE) reports a critical alarm for the disk :

1 device_error(s) found in logfile (related to 6130 my-se6130a/192.168.128.101) :
Sep 14 05:44:46 SUN.54062390100.0428AWF0ND Tray.0.Drive.3: [ID 0x1010] WARNING: Impending drive failure (PFA) detected (1/5d/0)::

Resolution
A disk reporting a status of "Predictive Failure" should be physically replaced, but a disk will not be failed by the array just as the result of logging a PFA, so the disk could still be in use.

Schedule a disk replacement for a convenient time :
- If the disk is used in a RAID 0 VDISK, then all volumes on that VDISK will need to be backed up prior to the replacement, because the volumes have no redundancy.
- If the disk is used in a RAID 1, RAID 3 or RAID 5 VDISK, then all volumes on that VDISK will be in a degraded state for the duration of the disk replacement and subsequent reconstruction of data.

Use the "Service Advisor" disk drive removal and replacement procedure documented within the Sun StorEdge[TM] 6130 Management Host software to replace the disk. "Service Advisor" is part of StorADE.

Provided the version of the Management Host software is v1.3 or higher, then the disk can be manually failed prior to replacement. To manually fail a disk :

Sun Storedge[TM] 6130 Configuration Service GUI :

Physical Storage -> Disks -> Click the disk name (e.g. t0d03) to see it's Disk Details screen -> "Fail" button

Sun Storedge[TM] 6130 Configuration Service CLI :

# /opt/se6x20/cli/bin/sscs fail -a my-se6130 disk t0d03

If a disk is manually failed when the array has a free hotspare configured, then (for a RAID 1, RAID 3 or RAID 5 VDISK) a reconstruction will be performed to the hotspare. This reconstruction may be unnecessary. To prevent it, temporarily unassign all hotspare disks configured on the array. Unassign them before manually failing the disk, and then reassign them as hotspares again after the disk has been physically replaced.

Additional Information
Prior to v1.3 of the Management Host software there was no way to manually fail a disk. The disk will be detected as failed after it is physically removed from the array.

To allow this to occur, wait at least 1 minute after removing the disk, before inserting it's replacement.

Product
Sun StorageTek 6130 Array

Internal Comments
A copy of the "Service Advisor" disk drive removal and replacement procedure is available internally at :

http://pts-storage.west/products/SE6130/ServiceAdvisor/tfdriverr.html

RFE are open to implement "copy and replace" or "clone and replace" type functionality on these arrays :

Bug ID: 6255051

Synopsis: Disk drive with 01/5d scsi error is not disabled

Bug ID: 6319945

Synopsis: Improve SE6130 handling of PFA/SMART disk drive events to implement "copy & replace"

SE6130, 6130, Predictive, Failure, Disk, PFA, Impending, Drive, 5d, 0x5d, PREDICTION, THRESHOLD, EXCEEDED
Previously Published As
82641

Change History
Date: 2006-08-01
User Name: 95826
Action: Approved
Comment: no change required.
republishing.
Version: 6
Date: 2006-08-01
User Name: 95826
Date: 2006-08-01
User Name: 75028
Action: Approved
Comment: Hi Robert, thanks for approving this document. I've just updated the "internal only" section with a couple more lines about RFE that are open about how the array handles PFAs - please could you approve it again?

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