Sharing DAS/NAS between VMs

In VMware Fusion, is it possible to run VMs (say 6-10 concurrently) off my Mac's SSD while adding vmdk's for each VM that are stored on a single:

a) DAS (USB3, Firewire, or thunderbolt)

b) NAS

If so, can anyone point to some instructions for how I would do this?

If this is possible with both, is one easier to mange than the other (say if I disconnect the DAS/NAS regularly, assuming VMs is powered off)?

Thanks in advance!