The reason I was confused was the mention of "DAS" which usually refers to non-shared storage, but from what you write I assume this is more like the storage being connected to both hosts directly rather than by using a network switch.
Anyway, depending on the applications running in the guest and whether a backup agent is required, an image based backup (e.g. Veeam, vRanger, ...) can be usually restored easier and faster.
André