How to resolve virtual disk degraded in Windows Server 2012

Question

I am using the new Storage Spaces feature in Windows Server 2012. I have the following disks:

FriendlyName        CanPool             OperationalStatus   HealthStatus        Usage                              Size
------------        -------             -----------------   ------------        -----                              ----
PhysicalDisk2       False               OK                  Healthy             Auto-Select                     2.73 TB
PhysicalDisk3       False               OK                  Healthy             Auto-Select                     2.73 TB
PhysicalDisk4       False               OK                  Healthy             Auto-Select                     2.73 TB
PhysicalDisk5       False               OK                  Healthy             Auto-Select                     2.73 TB

There is also a separate OS disk. The above disks are part of a single storage pool:

FriendlyName            OperationalStatus       HealthStatus            IsPrimordial            IsReadOnly
------------            -----------------       ------------            ------------            ----------
Pool                    OK                      Healthy                 False                   False

Within this storage pool some virtual disks are defined, see below:

FriendlyName        ResiliencySettingNa OperationalStatus   HealthStatus        IsManualAttach                     Size
                    me
------------        ------------------- -----------------   ------------        --------------                     ----
Docs                Mirror              OK                  Healthy             False                            500 GB
Data                Mirror              Degraded            Warning             False                            500 GB
Work                Mirror              Degraded            Warning             False                              2 TB

Now the virtual disks are all running normal 2-way mirror, but two of the virtual disks are degraded. This is probably because one of the physical disks was offline for a short period of time. However, now the virtual disk cannot be repaired, even though, all physical disks are healthy. There is plenty of available space in the storage pool.

This I cannot understand so I was hoping for some help, on how to resolve this?

Below I have listed the full output from the Get-VirtualDisk CmdLet for the "Work" disk:

ObjectId                          : {XXXXXXXX}
PassThroughClass                  :
PassThroughIds                    :
PassThroughNamespace              :
PassThroughServer                 :
UniqueId                          : XXXXXXXX
Access                            : Read/Write
AllocatedSize                     : 412316860416
DetachedReason                    : None
FootprintOnPool                   : 824633720832
FriendlyName                      : Work
HealthStatus                      : Warning
Interleave                        : 262144
IsDeduplicationEnabled            : False
IsEnclosureAware                  : False
IsManualAttach                    : False
IsSnapshot                        : False
LogicalSectorSize                 : 512
Name                              :
NameFormat                        :
NumberOfAvailableCopies           : 0
NumberOfColumns                   : 2
NumberOfDataCopies                : 2
OperationalStatus                 : Degraded
OtherOperationalStatusDescription :
OtherUsageDescription             : Disk for data being worked on (not backed up)
ParityLayout                      :
PhysicalDiskRedundancy            : 1
PhysicalSectorSize                : 4096
ProvisioningType                  : Thin
RequestNoSinglePointOfFailure     : True
ResiliencySettingName             : Mirror
Size                              : 2199023255552
UniqueIdFormat                    : Vendor Specific
UniqueIdFormatDescription         :
Usage                             : Other
PSComputerName                    :

SpiderIce · Answer 1 · 2014-01-21T16:47:53.003

2

I would try this KB article from Microsoft. Sounds similar to the issue you described.

https://support.microsoft.com/kb/2885668

edited Jan 21 '14 at 16:47

answered Jan 21 '14 at 16:38

SpiderIce

571

score 0 · Answer 2 · answered Jan 24 '13 at 13:12

0

Have you tried repair-volume? Source: http://www.petri.co.il/disk-repair-powershell-cmdlets-windows-server-2012.htm

answered Jan 24 '13 at 13:12

northben

380

score 0 · Answer 3 · answered Jan 25 '13 at 07:42

0

After making a backup of one of Virtual Disks, remove the mirrors and add it back again.

Also can see how much space is available on the actual drives.

answered Jan 25 '13 at 07:42

Badran

21

score 0 · Answer 4 · answered Mar 10 '16 at 09:24

What you can do is a process called Soft Disk Replacement. For that you should have a hot spare. The idea is to swap one of the disks with a hot spare and start repair-virtual disk.

If you have multiple enclosures, make sure you swap with a right hot spare. A virtual disk should have two disks from two different enclosures for high availability.

How to resolve virtual disk degraded in Windows Server 2012

4 Answers4