It will work, but it is *not* safe.

I would use a 4D backup anyway on the same drive the vm works. In this case 
they save with the snapshot of the vm the 4D backup files too.
Or you have to dive into the feature of volume shadow copies and the supporting 
of them by 4D.

Regards
Lutz


> -----Original Message-----
> From: 4D_Tech [mailto:4d_tech-boun...@lists.4d.com] On Behalf Of Peter 
> Jakobsson
> via 4D_Tech
> Subject: Backing up a VM - is it dangerous ?
> 
> Hi
> 
> One of my sites contracts out their server maintenance, procurement and 
> general
> support to an IT contractor. The contractor is fairly adaptable and I have 
> good
> professional relations with them, however I still have to work within certain 
> “overall
> parameters”.
> 
> One of these is that their 5-user 4D accounts server runs on a VM (Virtual 
> Machine).
> When I asked them about an external drive to hold the 4D backups, they 
> replied “don’t
> worry, the whole VM gets backed up once per day and the backup is held on 
> external
> drives”.
> 
> What are the implications of backing up the VM while 4D server is still 
> running ? On the
> old days this would have been a complete no-no because of un-flushed caches, 
> locked
> datafiles and all sorts of issues. Is anybody running this particular 
> configuration ?
> 
> Though I hopefully won’t be visiting the dentist anytime soon, Laurence 
> Olivier's words
> to Dustin Hoffman spring to mind…..”is it safe !?”  ;)
> 
> regards
> 
> Peter

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