Are you talking about doing this within the VM or from the hypervisor layer? If doing this from the hypervisor you will still be backing up the whole VM file, so I don't see this buying you anything.

If you are trying to open an existing disk image file but VirtualBox an error message UUID already exists, here is what you can do to fix this problem. This problem ...

If you cannot open the guest session and get a VERR_NOT_FOUND VirtualBox error, follow the tips, solutions, and workarounds mentioned below. Check if “VBoxGuestAdditions.iso”n exists Insert Guest ...

Open source file system vendor Gluster released its Storage Platform, integrating a file system, an operating system and a management UI to create a cluster that can store petabytes of information and ...