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Write-VolumeCache

Writes the file system cache to disk.

Windows Server · Risk: High · Documentation Verified

Last verified: 2026-10-26

Microsoft Storage reference: Writes the file system cache to disk. The syntax and selected example below are adapted from the pinned Windows Server 2025 reference. Module availability, target configuration and delegated permissions determine whether it can run in your environment. Documentation and parameter text: Microsoft, CC BY 4.0; formatting adapted by Cmdlet World. No execution testing is claimed.

Write-VolumeCache [-DriveLetter] <Char[]> [-CimSession <CimSession[]>] [-ThrottleLimit <Int32>] [-AsJob]
 [-PassThru] [<CommonParameters>]

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Required permissions

Use an account with the target resource permissions documented for Write-VolumeCache. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.

Supported environments

Windows / Storage · Windows Server 2025 documentation; feature/module prerequisites apply

Parameters

-AsJob: Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.
-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.
-DriveLetter (required): Specifies an array of letters that identify one or more drives or volumes in the system. The cmdlet writes the volume cache for the drives or volumes you specify.
-FileSystemLabel (required): Specifies an array of file system labels. The cmdlet writes the volume cache for the file system labels you specify.
-InputObject (required): Specifies the input object that is used in a pipeline command.
-ObjectId (required): Specifies an array of IDs, as strings. The ID is not globally unique.
-PassThru: Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.
-Path (required): Specifies an array of paths. The cmdlet writes the volume cache for the paths you specify.
-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.

Prerequisites

Windows with the Storage module and the Windows feature or management tools that provide it. Confirm target connectivity and version compatibility using the linked Microsoft reference.

Security considerations

This cmdlet changes system state. Review every target and parameter in the official reference, test outside production, and prepare an appropriate backup or rollback. Do not execute the example automatically.

Examples

Example 1: Write the volume cache

Write-VolumeCache C

This command writes the volume cache for the C: drive. Source: Microsoft, CC BY 4.0; transcript prompt/output removed. This example was not executed.

Sources

https://github.com/MicrosoftDocs/windows-powershell-docs/blob/b7645dd8c687139b28e845119da30ec670526507/docset/winserver2025-ps/Storage/Write-VolumeCache.md

https://learn.microsoft.com/powershell/module/storage/write-volumecache?view=windowsserver2025-ps

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