---
title: "Set-VBRComputerGFSMonthlyOptions"
description: "This cmdlet modifies settings of the monthly GFS retention policy that you can apply to Veeam Agent backup jobs. To modify settings, specify new values for the necessary parameters."
canonical: "https://helpcenter.veeam.com/docs/vbr/powershell/set-vbrcomputergfsmonthlyoptions.html"
breadcrumb: "Veeam PowerShell Reference > Veeam PowerShell Reference > Veeam Agent Management > Working with Veeam Agent Backup Jobs and Policies > Veeam Agent Job Advanced Settings > Set-VBRComputerGFSMonthlyOptions"
dateModified: "2026-08-19"
---

# Set-VBRComputerGFSMonthlyOptions

## Short Description
Modifies settings of the monthly GFS retention policy for Veeam Agent backup jobs.

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

## Syntax
```
Set-VBRComputerGFSMonthlyOptions -Options <VBRComputerGFSMonthlyOptions> [-RetentionPeriod <Int32>]
 [-SelectedWeek <VBRWeekOfMonth>] [<CommonParameters>]
```

## Detailed Description
This cmdlet modifies settings of the monthly GFS retention policy that you can apply to Veeam Agent backup jobs.

::: 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">Options</span></p>
        </td>
        <td>
          <p>Specifies a monthly GFS retention policy for Veeam Agent backup jobs. The cmdlet will modify this policy.</p><p>Accepts the <code>VBRComputerGFSMonthlyOptions</code> object. To create this object, run the <a href="new-vbrcomputergfsmonthlyoptions.md"><code>New-VBRComputerGFSMonthlyOptions</code></a> cmdlet.</p>
        </td>
        <td style="width:10%;">
          <p><code>VBRComputerGFSMonthlyOptions</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 (ByValue)</p>
        </td>
      </tr>
      <tr style="vertical-align:top">
        <td>
          <p class="Table_Text_Bold"><span class="Table_Text_Bold">RetentionPeriod</span></p>
        </td>
        <td>
          <p>Specifies the number of months to keep monthly full backups.</p>
        </td>
        <td style="width:10%;">
          <p><code>Int32</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">SelectedWeek</span></p>
        </td>
        <td>
          <p>Specifies a week of a month when a monthly backup is created. You can specify either of the following weeks:</p><ul><li><code>First</code> — the cmdlet will create the monthly backup in the first week of the month.</li><li><code>Second</code> — the cmdlet will create the monthly backup in the second week of the month.</li><li><code>Third</code> — the cmdlet will create the monthly backup in the third week of the month.</li><li><code>Fourth</code> — the cmdlet will create the monthly backup in the fourth week of the month.</li><li><code>Last</code> — the cmdlet will create the monthly backup in the last week of the month.</li></ul>
        </td>
        <td style="width:10%;">
          <p><code>VBRWeekOfMonth</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
This cmdlet returns the `VBRComputerGFSMonthlyOptions` object that contains settings of a monthly GFS retention policy for Veeam Agent backup jobs.

## Examples

::: example
### Example 1. Modifying Number of Months for GFS Retention Policy

This example shows how to modify the settings of the monthly GFS retention policy and change a number of months to keep monthly backups.  With these settings applied, Veeam Backup & Replication will keep monthly backups for 5 months.

```
$options = New-VBRComputerGFSMonthlyOptions -RetentionPeriod 3 -SelectedWeek First
Set-VBRComputerGFSMonthlyOptions -Options $options -RetentionPeriod 5
```

Perform the following steps:

1. Run the [`New-VBRComputerGFSMonthlyOptions`](new-vbrcomputergfsmonthlyoptions.md) cmdlet. Specify the `RetentionPeriod` and the `SelectedWeek` parameter values. Save the result to the `$options` variable.
2. Run the `Set-VBRComputerGFSMonthlyOptions` cmdlet. Set the `$options` variable as the `Options` parameter value. Specify the `RetentionPeriod` parameter value.

:::

::: example
### Example 2. Modifying Day When Backup is Created

This example shows how to modify the settings of the monthly GFS retention policy and change a week when a monthly backup is created.  With these settings applied, Veeam Backup & Replication will create monthly backups on the last week of a month.

```
$options = New-VBRComputerGFSMonthlyOptions -RetentionPeriod 3 -SelectedWeek First
Set-VBRComputerGFSMonthlyOptions -Options $options -SelectedWeek Last
```

Perform the following steps:

1. Run the [`New-VBRComputerGFSMonthlyOptions`](new-vbrcomputergfsmonthlyoptions.md) cmdlet. Specify the `RetentionPeriod` and the `SelectedWeek` parameter values. Save the result to the `$options` variable.
2. Run the `Set-VBRComputerGFSMonthlyOptions` cmdlet. Set the `$options` variable as the `Options` parameter value. Set the `Last` option for the `SelectedWeek` parameter.

:::

## Related Commands

[`New-VBRComputerGFSMonthlyOptions`](new-vbrcomputergfsmonthlyoptions.md)