Skip to main content

 

Druva Documentation

Configuring the use of VSS for backup

Overview

This topic explains how to use the Volume Shadow Copy Service (VSS) while taking backup from user devices.

About the Volume Shadow Copy Service

The Volume Shadow Copy Service (VSS) is a feature available on Windows computers that allows volume backups to be performed while applications on a system continue to write to the volumes. It captures and copies stable images for  backup on running systems without unduly degrading the performance and stability of the services they provide.

Note: inSync can use VSS to take backups only from Windows computers. 

Ways of taking backups from Windows computers

inSync can use one of the following ways when backing up data from user computers:

  • Backup using VSS: At the start of the backup process, inSync creates a snapshot or image of the backup folders using the VSS. It then backs up data based on the image. If inSync is unable to create a snapshot, it starts backing up data by reading files directly from the file system. However, when reading files directly from the file system, inSync will skip any locked file it encounters. 
  • Backup from live data: inSync starts backing up data by reading files directly from the file system. If it detects a locked file, it creates a snapshot and uses it to backup the locked files. If inSync is unable to create a snapshot, it skips any locked file it encounters. 
Note: By default, inSync uses VSS to backup data from Windows computers. For Mac or Linux computers, it backs up from live data. 

Enabling backup using VSS

To enable backup using VSS

  1. Log on to inSync server.
  2. Open the file <inSyncServer4>/inSyncServer.cfg using any text editing tool.
  3. Make sure that the parameter Force_VSS is set to True.

Enabling backup from live data

To enable backup from live data

  1. Log on to inSync server.
  2. Open the file <inSyncServer4>/inSyncServer.cfg using any text editing tool.
  3. Make sure that the parameter Force_VSS is set to False.

  • Was this article helpful?