---
title: "Set-VBRViVirtualDeviceMappingRule"
description: "This cmdlet modifies mapping settings of backed-up virtual disks. To modify settings, specify new values for the necessary parameters. The cmdlet will overwrite the previous parameter values with new values."
canonical: "https://helpcenter.veeam.com/docs/vbr/powershell/set-vbrvivirtualdevicemappingrule.html"
breadcrumb: "Veeam PowerShell Reference > Veeam PowerShell Reference > Data Recovery > Virtual Disks Restore > Set-VBRViVirtualDeviceMappingRule"
dateModified: "2026-08-19"
---

# Set-VBRViVirtualDeviceMappingRule

## Short Description
Modifies backed-up virtual disk mapping settings.

**Product Edition**: Standard, Enterprise, Enterprise Plus, Veeam Universal License

## Syntax
```
Set-VBRViVirtualDeviceMappingRule -MappingRule <VBRViVirtualDeviceMappingRule>
 [-SourceVirtualDevice <VBRViVirtualDevice>] [-Datastore <CViDatastoreItem>] [<CommonParameters>]
```

## Detailed Description
This cmdlet modifies mapping settings of backed-up virtual disks.

::: note

To modify settings, specify new values for the necessary parameters. The cmdlet will overwrite the previous parameter values with new values. The parameters that you omit will remain unchanged.

:::

## Parameters

<table style="width:100%;" class="Blue_Table">
      <tr style="vertical-align:top">
        <th style="width:20%;">
          <p>Parameter</p>
        </th>
        <th style="width:20%;">
          <p>Description</p>
        </th>
        <th style="width:20%;">
          <p>Type</p>
        </th>
        <th style="width:10%;">
          <p>Required</p>
        </th>
        <th style="width:10%;">
          <p>Position</p>
        </th>
        <th style="width:10%;">
          <p>Accept Pipeline Input</p>
        </th>
      </tr>
      <tr style="vertical-align:top">
        <td>
          <p class="Table_Text_Bold"><span class="Table_Text_Bold">Datastore</span></p>
        </td>
        <td>
          <p>Specifies a datastore. The cmdlet will map backed-up virtual disks to this datastore.</p><p>Accepts the <code>CViDatastoreItem</code> object. To create this object, run the <a href="find-vbrvidatastore.md"><code>Find-VBRViDatastore</code></a> cmdlet.</p>
        </td>
        <td style="width:10%;">
          <p><code>CViDatastoreItem</code></p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
        <td style="width:10%;">
          <p>Named</p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
      </tr>
      <tr style="vertical-align:top">
        <td>
          <p class="Table_Text_Bold"><span class="Table_Text_Bold">MappingRule</span></p>
        </td>
        <td>
          <p>Specifies the mapping settings that you want to modify.</p><p>Accepts the <code>VBRViVirtualDeviceMappingRule</code> object. To define this object, run the <a href="new-vbrvivirtualdevicemappingrule.md"><code>New-VBRViVirtualDeviceMappingRule</code></a> cmdlet.</p>
        </td>
        <td style="width:10%;">
          <p><code>VBRViVirtualDeviceMappingRule</code></p>
        </td>
        <td style="width:10%;">
          <p>True</p>
        </td>
        <td style="width:10%;">
          <p>Named</p>
        </td>
        <td style="width:10%;">
          <p>True (ByPropertyName, ByValue)</p>
        </td>
      </tr>
      <tr style="vertical-align:top">
        <td>
          <p class="Table_Text_Bold"><span class="Table_Text_Bold">SourceVirtualDevice</span></p>
        </td>
        <td>
          <p>Specifies backed-up virtual disks. The cmdlet will map these disks to the datastore.</p><p>Accepts the <code>VBRViVirtualDevice</code> object. To create this object, run the <a href="get-vbrvivirtualdevice.md"><code>Get-VBRViVirtualDevice</code></a> cmdlet.</p>
        </td>
        <td style="width:10%;">
          <p><code>VBRViVirtualDevice</code></p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
        <td style="width:10%;">
          <p>Named</p>
        </td>
        <td style="width:10%;">
          <p>False</p>
        </td>
      </tr>
    </table>

`<CommonParameters>`

This cmdlet supports Microsoft PowerShell common parameters. For more information on common parameters, see [ Microsoft Docs](https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_commonparameters?view=powershell-7).

## Output Object
The cmdlet returns the `VBRViVirtualDeviceMappingRule` object that defines backed-up virtual disks mapping settings.

## Examples

::: example
### Modifying Mapping Settings of Backed-Up Virtual Disks

This example shows how to modify an existing mapping rule. The cmdlet will set this rule to map backed-up virtual disks to the `LocalStore_0` datastore.

```
$backup = Get-VBRBackup -Name "Winsrv4515"
$restorepoint = Get-VBRRestorePoint -Backup $backup
$disks = Get-VBRViVirtualDevice -RestorePoint $restorepoint[3]
$mappingrule = New-VBRViVirtualDeviceMappingRule -SourceVirtualDevice $disks
$server = Get-VBRServer -Name "WinSrv2073"
$datastore = Find-VBRViDatastore -Server $server -Name "LocalStore_0"
Set-VBRViVirtualDeviceMappingRule -MappingRule $mappingrule -Datastore $datastore
```

Perform the following steps:

1. Get the backed-up VM virtual disks:

   1. Run the [`Get-VBRBackup`](get-vbrbackup.md) cmdlet. Specify the `Name` parameter value. Save the result to the `$backup` variable.
   2. Run the [`Get-VBRRestorePoint`](get-vbrrestorepoint.md) cmdlet. Specify the `Backup` parameter value. Save the result to the `$restorepoint` variable.
   3. Run the [`Get-VBRViVirtualDevice`](get-vbrvivirtualdevice.md) cmdlet. Specify the `RestorePoint` parameter value. Save the result to the `$disks` variable.

      The `Get-VBRRestorePoint` cmdlet will return an array of disks. Consider that the array numbering starts with 0. In our example, the fourth restore point will be used.

2. Run the [`New-VBRViVirtualDeviceMappingRule`](new-vbrvivirtualdevicemappingrule.md) cmdlet. Set the `$disks` variable as the `SourceVirtualDevice` parameter value. Save the result to the `$mappingrule` variable.
3. Get the datastore:

   1. Run the [`Get-VBRServer`](get-vbrserver.md) cmdlet. Specify the `Name` parameter value. Save the result to the `$server` variable.
   2. Run the [`Find-VBRViDatastore`](find-vbrvidatastore.md) cmdlet. Specify the `Name` and `Server` parameter values. Save the result to the `$datastore` variable.

4. Run the `Set-VBRViVirtualDeviceMappingRule` cmdlet. Set the `$mappingrule` variable as the `MappingRule` parameter value. Set the `$datastore` variable as the `Datastore` parameter value.

:::

## Related Commands

- [`Get-VBRBackup`](get-vbrbackup.md)
- [`Get-VBRRestorePoint`](get-vbrrestorepoint.md)
- [`Get-VBRViVirtualDevice`](get-vbrvivirtualdevice.md)
- [`Get-VBRServer`](get-vbrserver.md)
- [`Find-VBRViDatastore`](find-vbrvidatastore.md)
- [`New-VBRViVirtualDeviceMappingRule`](new-vbrvivirtualdevicemappingrule.md)