Server Fault is a question and answer site for system and network administrators. 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 have a ESXi host with both Windows and CentOS virtual machines running. A couple of them are running SQL Databases (MSSQL and MySQL). I am trying to setup a backup strategy using the ghettoVCB script, I have successfully executed the backups and ready to test the restore functions. ghettoVCB takes backups of the VM without taking them offline by creating a snapshot of the running machine and then deleting it after a successful backup.

Since the resulting backup is an offline VM wouldn't that harm the consistency of the databases (and other applications running at the time of the snapshot) ? Is it reliable to use this snapshots as a backup ?

share|improve this question
up vote 1 down vote accepted

It depends if the VM was quieced prior to the snap, in the case of an SQL server this would need to be via VSS which is enabled by up to date vmtools and the request to do so. I don't know GhettoVCB but I do know the APIs it uses can issue a request to vmtools to quiece via VSS, whether it uses this or not I don't know but that's the only route to a genuinely coherent snap and subsequent restore.

share|improve this answer
That's right what I was looking for. There is an option in ghettoVCB to take quiesced snapshots. – drcelus May 9 '12 at 9:55

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.