есть пул из 4х дисков
PS C:\Windows\system32> Get-StoragePool -FriendlyName "Pool1" | Get-PhysicalDisk | ft -AutoSize
FriendlyName CanPool OperationalStatus HealthStatus Usage Size
------------ ------- ----------------- ------------ ----- ----
PhysicalDisk2 False OK Healthy Auto-Select 371.75 GB
PhysicalDisk1 False OK Healthy Auto-Select 371.75 GB
PhysicalDisk3 False OK Healthy Auto-Select 465 GB
PhysicalDisk4 False OK Healthy Auto-Select 465 GB
Собран диск Mirror
PS C:\Windows\system32> Get-VirtualDisk -FriendlyName VMs | fl
Access : Read/Write
AllocatedSize : 796716433408
DetachedReason : None
FootprintOnPool : 1593432866816
FriendlyName : VMs
HealthStatus : Warning
Interleave : 262144
IsDeduplicationEnabled : False
IsEnclosureAware : False
IsManualAttach : True
IsSnapshot : False
LogicalSectorSize : 512
Name :
NameFormat :
NumberOfAvailableCopies :
NumberOfColumns : 2
NumberOfDataCopies : 2
OperationalStatus : Degraded
OtherOperationalStatusDescription :
OtherUsageDescription :
ParityLayout : Unknown
PhysicalDiskRedundancy : 1
PhysicalSectorSize : 4096
ProvisioningType : Fixed
RequestNoSinglePointOfFailure : False
ResiliencySettingName : Mirror
Size : 796716433408
UniqueIdFormat : Vendor Specific
UniqueIdFormatDescription :
Usage : Other
Repair-VirtualDisk-FriendlyNameVMs-Verbose
И ничего... Есть ещё варианты полечить диск?