Last week, I was presenting at the VMware User Group (VMUG) event in Poland. My topic was SPBM, Storage Policy Based Management. This is the framework for consuming data services, whether these are provided from vSAN, Virtual Volumes or VAIO (IO Filters). You can get the presentation from here. One of the attendees who had implemented Virtual Volumes (aka VVols) asked a very interesting question about changing policies of a VVol based VM on-the-fly. The question is whether a policy change causes a new VVol has to be instantiated, data synced to original VVol and then the original VVol is…