From: "Massimo S." <virtualized_ecs_users@2rosenthals.com>
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Il 29/01/2020 00:13, Doug Bissett ha scritto:
>> vmdk is the "raw" format
>> must be use in the case you need (like me)
>> live bkups
>>
>> if you use Windows server the service VSS and vmdk as vm
> format
>> permit to bkup VMs live when they are running
> I don't trust backups that are made while something is using a file
> (and the virtual disk is just one big file). To do it properly, the host
> would need to, somehow, freeze access to the file, while it is
> backed up, and that can take some time, depending on how big it is.

VSS (shadow copy provider) is here since 2008 of before
it's a *consolidated* technology

i use it with power shell to copy VM under Hyper-V and WinServ
and it works *perfectly*, never had an issue in years..

https://en.wikipedia.org/wiki/Shadow_Copy

massimo