Enable-Dedup Volume

Module:
deduplication
Enables data deduplication on one or more volumes.

Syntax 

Enable-DedupVolume
      [-Volume] <String[]>
      [-DataAccess]
      [-UsageType <UsageType>]
      [-CimSession <CimSession[]>]
      [-ThrottleLimit <Int32>]
      [-AsJob]
      [<CommonParameters>]

Description

The Enable-DedupVolume cmdlet enables data deduplication on one or more volumes. You can use the Set-DedupVolume cmdlet to customize the data deduplication settings. Data deduplication is disabled by default. Data deduplication is not supported for certain volumes, such as any volume that is not a NTFS file system or any volume that is smaller than 2 GB.

Examples

Example 1: Enable data deduplication on volumes 

PS C:\> Enable-DedupVolume -Volume "D:","E:","F:"

This command enables data deduplication on volumes D:, E:, and F:. This command does not specify a value for the UsageType parameter, and, therefore, the cmdlet uses defaults for general purpose file server operations.

Example 2: Enable data deduplication on a volume for Hyper-V storage 

PS C:\> Enable-DedupVolume -Volume "D:" -UsageType HyperV

This command enables data duplication on the D: volume. The command specifies Hyper-V storage as the usage type for this volume.

Example 3: Enable data deduplication on a volume by using a GUID 

PS C:\> Enable-DedupVolume -Volume "\\?\Volume{26a21bda-a627-11d7-9931-806e6f6e6963}\"

This command enables data deduplication for the volume that has the GUID 26a21bda-a627-11d7-9931-806e6f6e6963.

Example 4: Resume I/O activity on a specified volume/ 

PS C:\> Enable-DedupVolume -Volume "X:" -DataAccess

This command resumes I/O activity for data deduplication on the specified volume. Effectively, this command causes the data deduplication file system mini-filter to attach to the specified volume

Required Parameters

-Volume

Specifies an array of system volumes. Specify one or more volume IDs, drive letters, or volume GUID paths. For drive letters, use the format D:. For volume GUID paths, use the format \\?\Volume{{GUID}}. Separate multiple volumes with a comma.

Type: String[]
Aliases: DeviceId, Path, Name
Position: 0
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False

Optional Parameters

-AsJob

Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.

The cmdlet immediately returns an object that represents the job and then displays the command prompt. You can continue to work in the session while the job completes. To manage the job, use the *-Job cmdlets. To get the job results, use the Receive-Job cmdlet.

For more information about Windows PowerShell background jobs, see about_Jobs .

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-CimSession

Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local computer.

Type: CimSession[]
Aliases: Session
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-DataAccess

Indicates that data access to deduplicated files on the volume is enabled.

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-ThrottleLimit

Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies only to the current cmdlet, not to the session or to the computer.

Type: Int32
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-UsageType

Specifies the expected type of workload for the volume. This cmdlet sets several low-level settings to default values that are appropriate to the usage type that you specify. If you specify this parameter for a volume that already has data deduplication enabled, the cmdlet modifies the settings to the appropriate default values. If you run this cmdlet on a volume that already has data deduplication enabled but do not specify this parameter, the cmdlet does not change the usage type. The acceptable values for this parameter are:

  • HyperV. A volume for Hyper-V storage.
  • Backup. A volume that is optimized for virtualized backup servers.
  • Default. A general purpose volume. If you do not specify a value for this parameter, the cmdlet uses a value of Default.

If you specify a value of HyperV, the computer that has data deduplication enabled cannot be the same computer that runs Hyper-V. The two computers must communicate remotely.

Type: UsageType
Parameter Sets: Default, HyperV, Backup
Position: Named
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False

Inputs

System.String[]

Outputs

Microsoft.Management.Infrastructure.CimInstance

The Microsoft.Management.Infrastructure.CimInstance object is a wrapper class that displays Windows Management Instrumentation (WMI) objects. The path after the pound sign ( # ) provides the namespace and class name for the underlying WMI object.