Windows Server · Risk: High · Documentation Verified
Last verified: 2026-10-26
Microsoft Storage reference: Modifies a storage tier. 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.
Use an account with the target resource permissions documented for Set-StorageTier. 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.
-ColumnIsolation
Specifies at which level columns within a virtual disk should be isolated from each other. We recommend omitting this parameter and using the defaults. The acceptable values for this parameter are: - PhysicalDisk - StorageScaleUnit - StorageChassis - StorageEnclosure - StorageRack
-Description
Specifies a description for the storage tier.
-FaultDomainAwareness
Specifies at what level you want the storage tier to be fault tolerant. The acceptable values for this parameter are: - PhysicalDisk - StorageScaleUnit - StorageChassis - StorageEnclosure - StorageRack For example, specify StorageScaleUnit to store data copies on separate nodes of a Storage Spaces Direct cluster. This cmdlet refers to nodes of a Storage Spaces Direct cluster as storage scale units because you can expand the scale of the cluster by adding more nodes.
-FriendlyName (required)
Specifies the friendly name of the storage tier to modify.
-InputObject (required)
Specifies the input object that is used in a pipeline command.
-Interleave
Specifies the interleave value to use during the creation of a virtual disk. The interleave value represents the number of bytes that is written to a single physical disk. Therefore, Interleave * NumberOfColumns yields the size of one stripe of user data.
-MediaType
Specifies the media type of the storage tier. The acceptable values for this parameter are: - SSD - SCM - HDD Use SCM for storage-class memory such as NVDIMMs.
-NewFriendlyName
Specifies a new friendly name for the storage tier.
-NumberOfColumns
Specifies the number of columns to use when allocating the storage tier.
-NumberOfDataCopies
Specifies the number of data copies to create. Specify 2 to create a two-way mirror, or 3 to specify a three-way mirror or for dual-parity.
-NumberOfGroups
Specifies the number of groups used by Local Reconstruction Coding (LRC) with a dual parity virtual disk. We recommend omitting this parameter and using the defaults.
-PhysicalDiskRedundancy
Specifies the physical disk redundancy value to use during the creation of a virtual disk. This value represents how many failed physical disks the virtual disk can tolerate without data loss. The redundancy values are as follows: - For two-way mirror spaces, the virtual disk can tolerate 1 failed physical disk without data loss. - For three-way mirror spaces, the virtual disk can tolerate 2 failed physical disks without data loss. - For single-parity spaces, the virtual disk can tolerate 1 failed physical disk without data loss. - For dual-parity spaces the virtual disk can tolerate 2 failed physical disks without data loss.
-ResiliencySettingName
Specifies the resiliency setting, or storage layout, to use for the virtual disk. Acceptable values vary by storage subsystem. Allowed values for the Windows Storage subsystem are: Simple, Mirror, or Parity. By default, when you specify Mirror, Storage Spaces creates a two-way mirror, and when you specify Parity, Storage Spaces creates a single-parity space. To create a three-way mirror space, specify 3 for the *NumberofDataCopies* parameter or 2 for the PhysicalDiskRedundancy parameter. To create a dual-parity space, specify 2 for the *PhysicalDiskRedundancy* parameter and Fixed provisioning for the *ProvisioningType* parameter.
-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.
-UniqueId (required)
Specifies the unique ID of the storage tier to modify.
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.
This command changes the friendly name of the storage tier that has the specified ID. Source: Microsoft, CC BY 4.0; transcript prompt/output removed. This example was not executed.