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Agent Configuration - VSS Writer Exclusion


1. Scope

This article describes the procedure to exclude certain VSS Writers (Microsoft's Volume Shadow Service) from being backed up by a Datto device. This may be used if another VSS-aware solution is running in the same environment for specific VSS Writers.

2. Procedure

To exclude a VSS Writer from future backups, follow this procedure:

  1. Open the web interface for the Datto appliance.
  2. Click the Protect tab.
  3. Find the agent you wish to configure, and click Configure Agent Settings.
  4. Scroll down to the Advanced section to the VSS Writer Exclusion settings, as shown in Figure 1.

    Figure 1 - VSS Writer Exclusion Settings

  5. Check the box(es) for the writer(s) that you wish to exclude from future backups. This will not affect previous backups.

3. Example

Example: Commonly a SQLSERVERAGENT service may be configured to use the MSDEWriter or SQLServer VSS Writer for its own VSS application aware processes.  

  • By excluding these VSS Writers, the SQLSERVERAGENT can continue to provide the services its responsible for.
  • Keep in mind that backups taken with these VSS Writers excluded will be that of a crash-consistent state for the SQL database when using the default Application-Aware VSS.

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