Optimize-Volume

Optimize-Volume

Optimizes a volume, performing such tasks as defragmentation and trim.

Syntax

Parameter Set: ByDriveLetter
Optimize-Volume [-DriveLetter] <Char[]> [-Analyze] [-AsJob] [-CimSession <CimSession[]> ] [-Defrag] [-ReTrim] [-SlabConsolidate] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: ById
Optimize-Volume -ObjectId <String[]> [-Analyze] [-AsJob] [-CimSession <CimSession[]> ] [-Defrag] [-ReTrim] [-SlabConsolidate] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: ByLabel
Optimize-Volume -FileSystemLabel <String[]> [-Analyze] [-AsJob] [-CimSession <CimSession[]> ] [-Defrag] [-ReTrim] [-SlabConsolidate] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: ByPaths
Optimize-Volume -Path <String[]> [-Analyze] [-AsJob] [-CimSession <CimSession[]> ] [-Defrag] [-ReTrim] [-SlabConsolidate] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: InputObject (cdxml)
Optimize-Volume -InputObject <CimInstance[]> [-Analyze] [-AsJob] [-CimSession <CimSession[]> ] [-Defrag] [-ReTrim] [-SlabConsolidate] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

Detailed Description

The Optimize-Volume cmdlet optimizes a volume, performing such tasks as defragmentation and trim.

If no parameter is specified, then the default operation will be performed per the drive type as follows.

Defragment (drive type) : HDD
Slab : YES
Consolidation : NO
TRIM : NO

Defragment (drive type) : SSD
Slab : NO
Consolidation : NO
TRIM : YES

Defragment (drive type): VHD
Slab : YES
Consolidation : NO
TRIM : NO

Defragment (drive type): diff VHD
Slab : NO
Consolidation : NO
TRIM : YES

Defragment (drive type): Thinly Provisioned (Storage Spaces, thinly provisioned SAN Virtual Disk, Dynamic VHD)
Slab : NO
Consolidation : YES
TRIM : YES

Parameters

-Analyze

Analyzes the volume specified for defrag or optimize statistics. Performs analysis only and reports the current optimization state of the volume.

Aliases	none
Required?	false
Position?	named
Default Value	none
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-AsJob

Aliases	none
Required?	false
Position?	named
Default Value	none
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-CimSession<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.

Aliases	Session
Required?	false
Position?	named
Default Value	none
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-Defrag

Runs the defragment function on the specified volume, consolidating fragmented files to improve read and write performance.

Aliases	none
Required?	false
Position?	named
Default Value	none
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-DriveLetter<Char[]>

Specifies the drive letter of the volume to optimize.

Aliases	none
Required?	true
Position?	1
Default Value	none
Accept Pipeline Input?	True (ByPropertyName)
Accept Wildcard Characters?	false

-FileSystemLabel<String[]>

Specifies the file system label of the volume to optimize.

Aliases	none
Required?	true
Position?	named
Default Value	none
Accept Pipeline Input?	True (ByPropertyName)
Accept Wildcard Characters?	false

-InputObject<CimInstance[]>

Accepts an object from the pipeline as input.

Aliases	none
Required?	true
Position?	named
Default Value	none
Accept Pipeline Input?	True (ByValue)
Accept Wildcard Characters?	false

-ObjectId<String[]>

Specifies the ID of the volume to optimize.

Aliases	Id
Required?	true
Position?	named
Default Value	none
Accept Pipeline Input?	True (ByPropertyName)
Accept Wildcard Characters?	false

-Path<String[]>

Specifies the path of the volume to optimize.

Aliases	none
Required?	true
Position?	named
Default Value	none
Accept Pipeline Input?	True (ByPropertyName)
Accept Wildcard Characters?	false

-ReTrim

Generates TRIM and Unmap hints for all previously used sectors of the volume, notifying the underlying storage that the sectors are no longer needed and can be purged. This can recover unused capacity on thinly provisioned drives and on solid state drives (SSDs).

Aliases	none
Required?	false
Position?	named
Default Value	none
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-SlabConsolidate

Optimizes the volume per the supplied slab size and alignment to reduce the number of slabs on which the volumes is mounted. Perfoms slab consolidation on the storage to optimize slab allocations.

Aliases	none
Required?	false
Position?	named
Default Value	none
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-ThrottleLimit<Int32>

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.

Aliases	none
Required?	false
Position?	named
Default Value	none
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-Confirm

Prompts you for confirmation before running the cmdlet.

Required?	false
Position?	named
Default Value	false
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

-WhatIf

Shows what would happen if the cmdlet runs. The cmdlet is not run.

Required?	false
Position?	named
Default Value	false
Accept Pipeline Input?	false
Accept Wildcard Characters?	false

<CommonParameters>

This cmdlet supports the common parameters: -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer, and -OutVariable. For more information, see    about_CommonParameters (https://go.microsoft.com/fwlink/p/?LinkID=113216).

Inputs

The input type is the type of the objects that you can pipe to the cmdlet.

• Microsoft.Management.Infrastructure.CimInstance#ROOT/Microsoft/Windows/Storage/MSFT_Volume

  You can pipe a Volume object to the InputObject parameter.

Notes

• 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.

Examples

Example 1: Perform TRIM optimization

This example optimizes drive H by re-sending Trim requests. This is useful on SSD media, and thinly provisioned storage.

PS C:\> Optimize-Volume -DriveLetter H -ReTrim –Verbose

Example 2: Analyze a volume

This example reports only the current optimization state of drive H.

PS C:\> Optimize-Volume -DriveLetter H -Analyze –Verbose

Example 3: Defragment a volume

This example defragments drive H.

PS C:\> Optimize-Volume -DriveLetter H -Defrag –Verbose

Example 4: Perform slab consolidation

This example performs slab consolidation on the storage space backing volume H.

PS C:\> Optimize-Volume -DriveLetter H -SlabConsolidate –Verbose

Related topics

Format-Volume

Get-Volume

Repair-Volume

Set-Volume