Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I know that Windows Complete PC Backup (Vista, 7) uses Volume Shadow Copy Service. Does this mean that making a backup is an atomic operation, with a snapshot created at the beginning of the backup operation? Does this prevent the possibility of the backup image ending up in an inconsistent state if files or settings are modified while the backup is taking place?

share|improve this question
up vote 0 down vote accepted

From http://technet.microsoft.com/en-us/magazine/2007.09.backup.aspx:

In File Backup, Volume Shadow Copy Service is used to create consistent copies of files that are open or in use by applications. During the backup process, the backup app reads from these consistent copies. This is handy, for example, when backing up a .pst file that is constantly opened by Microsoft Outlook®. Volume Shadow Copy Service ensures the backed-up .pst file is in a consistent state so that it can be accessed upon restore.

I'm not sure if it ensures consistency across different files, but I would assume so as this same service is used for Windows Server where it would be critical to make sure that scenario is satisfied...

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .