Image level backups with VMware virtual machines.

Hello,

 I have a question regarding backups of virtual machines. Which machines should you use IMAGE level backups on?

i currently have domain controller,Exchange servers,File Servers,SQL Servers, Application servers.
victordrAsked:
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Nick RhodeIT DirectorCommented:
Honestly I did image level across all my servers.  If its a space issue I usually only did mission critical images which you have outlined above.  Otherwise if it was like an AV server where you can just install a management console that will sync with all the clients easily then I did not make that a priority.  Thats an example.
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victordrAuthor Commented:
I would think Exchange/SQL servers you would use an application aware agent on instead of image level. Also snapping images of Domain Controllers can cause issues would't you think?
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Nick RhodeIT DirectorCommented:
Depending on the software but ARCserver has their own agent for backing up machines that are needed to be 24/7.  Examples are exchange ans SQL clients where it snapshots the database and images the current state so you dont have to worry about skipped files etc.

Images of domain controllers is nothing to worry about.  You just have to make sure you are within a decent timeframe and if you were to recover a DC make sure you set the time back.  As long as the DC is recent a recovery is fine.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
if you are using a Virtual Machine Backup Aware application, VMs are backed-up at the block level, e.g. the entire vmdk is backed-up.
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victordrAuthor Commented:
I am asking what is best practice in terms of doing block level. Should all servers be backed up using block level or only certain ones?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
All Servers should be backed-up at Block Level.
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