COMMAND EVERYTHING.
Creates a storage tier.
Microsoft Storage reference: Creates 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 New-StorageTier. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.
Windows / Storage · Windows Server 2025 documentation; feature/module prerequisites apply
-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 that you create.
-FaultDomainAwareness- Specifies at what level you want the virtual disk 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 a friendly name for the storage tier.
-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 storage tier. The interleave value represents the number of bytes that is written to a single physical disk. Thus Interleave * NumberOfColumns yields the size of one stripe of user data.
-MediaType- Specifies the media type of the storage tier. The cmdlet creates the storage tier for the media type that you specify. The acceptable values for this parameter are: - SSD - SCM - HDD Use SCM for storage-class memory such as NVDIMMs.
-NumberOfColumns- Specifies the number of columns to use for the storage tier. Columns represent the number of underlying physical disks in a tier across which one stripe of data for a virtual disk is written.
-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- Specifics 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. The acceptable values for this parameter are: Simple, Mirror, and Parity. By default, when you specify Mirror, Storage Spaces creates a two-way mirror. 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.
-StoragePoolFriendlyName (required)- Specifies the friendly name of a storage pool. The cmdlet creates the storage tier in the storage pool that you specify.
-StoragePoolName (required)- Specifies the name of a storage pool. The cmdlet creates the storage tier in the storage pool that you specify. This human-readable name is not necessarily unique.
-StoragePoolUniqueId (required)- Specifies the unique ID, as a string, of a storage pool. The cmdlet creates the storage tiers in the storage pool that has the ID that 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.
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.
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.