I'm trying to enable Data Deduplication on C: drive but Server Manager doesn't allow me to do so. After using PowerShell command it gave me following message:
Windows PowerShell
Copyright (C) 2014 Microsoft Corporation. All rights reserved.
PS C:\Windows\system32> Import-Module Deduplication
PS C:\Windows\system32> Enable-DedupVolume C: -UsageType Default
Enable-DedupVolume : MSFT_DedupVolume.Volume='C:' - HRESULT 0x8056530b, The
specified volume type is not supported. Deduplication is supported on fixed, write-enabled NTFS data volumes and CSV backed by NTFS data volumes.
At line:1 char:1
+ Enable-DedupVolume C: -UsageType Default
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified:
(MSFT_DedupVolume:ROOT/Microsoft/...SFT_DedupVolume) [Enable-DedupVolume], CimException
+ FullyQualifiedErrorId : HRESULT 0x8056530b,Enable-DedupVolume
PS C:\Windows\system32>
However this Volume indeed is NTFS, write enabled, fixed Volume. At least I guess so, that's what Server Manager says.