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Get-PhysicalExtent

This cmdlet gets physical allocations for a physical disk, storage tier, or virtual disk. The "extent" (also known as "allocation" or "slab") is the area on a pooled disk containing one fragment of data for storage space.

Windows Server · Risk: Low · Documentation Verified

Last verified: 2026-10-26

Microsoft Storage reference: This cmdlet gets physical allocations for a physical disk, storage tier, or virtual disk. The "extent" (also known as "allocation" or "slab") is the area on a pooled disk containing one fragment of data for storage space. 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.

Get-PhysicalExtent -PhysicalDisk <CimInstance> [-CimSession <CimSession>] [<CommonParameters>]

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Required permissions

Use an account with the target resource permissions documented for Get-PhysicalExtent. 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

-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.
-PhysicalDisk (required): Specifies physical disk. To obtain a PhysicalDisk object, use the Get-PhysicalDisk cmdlet.
-StorageTier (required): Specifies storage tier. To obtain a StorageTier object, use the Get-StorageTier cmdlet.
-VirtualDisk (required): Specifies virtual disk. To obtain a VirtualDisk object, use the Get-VirtualDisk cmdlet.

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 is a read-oriented cmdlet; protect any sensitive results and check the documented effects of your selected parameters.

Examples

Example 1: Get physical extents on one specific physical disks

Get-PhysicalExtent -PhysicalDisk $(Get-PhysicalDisk)[0]

This command gets physical extents on all physical disks on the computer. 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/Get-PhysicalExtent.md

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

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