Physical disk {8acb91cd-c919-116d-a061-e3c01b0798e7} failed an IO operation. Return Code: The request failed due to a fatal device hardware error.. Additional related events may be found in the System event log for Disk 3. This disk may need to be replaced. To view its reliability counters, run this command in PowerShell: Get-PhysicalDisk | ?{ $_.ObjectId -Match "{8acb91cd-c919-116d-a061-e3c01b0798e7}" } | Get-StorageReliabilityCounter This disk may be located using the following information: Drive Manufacturer: NULL Drive Model Number: ST31000524NS Drive Serial Number: 9WK1D3JK More information can be obtained using this PowerShell command: Get-PhysicalDisk | ?{ $_.ObjectId -Match "{8acb91cd-c919-116d-a061-e3c01b0798e7}" } If this disk is in an enclosure, it may be located using the following information: Enclosure Manufacturer: NULL Enclosure Model Number: NULL Enclosure Serial Number: NULL Enclosure Slot: -1 It may also be located by running this command in PowerShell: Get-PhysicalDisk | ?{ $_.ObjectId -Match "{8acb91cd-c919-116d-a061-e3c01b0798e7}" } | Enable-PhysicalDiskIndication