Backing up VMs to NAS

[ringo747]

At the moment I use robocopy to backup all my virtualbox directory to a NAS. If it comes across a file that has changed it takes hours to complete. Instead I now use the date parameter to create a separate folder and it creates all the new files which seems to be quicker than doing a replace.

Is there any tools I can use that would only sync the deltas of my VDI/VHD files? This could be seriously handy.

 

[bremen1874]

I have a dedicated drive for my VMs and use Acronis True Image to perform a block-level incremental backup each evening. It only takes a couple of minutes to backup the changes.

 

[ringo747]

Sounds good but I'm looking for some free solution to do this.