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Info

If this error appears during Differential or Incremental backups of databases, please review the following article instead:

Info: How do databases handle backups from multiple different backup applications?

This The behavior described in that article accounts for an overwhelming majority of VSS Writer issues related to Microsoft SQL Server, Microsoft Exchange, and Microsoft SharePoint.

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  • A writer in the Stable state is ready and waiting to take a backup.
  • Writers in the Failed or Unstable states have encountered a problem, and may need to be reset by restarting the controlling service.
  • Writers that are currently Waiting for Completion or In-Progress are in use by some process. Cancel any backup that is running, or wait for it to complete, before running a new backup.
    • If no backups are running, the writer should be reset like Failed or Unstable writers by restarting the controlling service.

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All requirements are listed in the User Guide , available at http://help.zmanda.com.

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