@neotoy it's great - once.
tested with a bunch of smaller drives, really needs s/w raid of some sort, that bottlenecked i/o when combined with one slightly slower drive. you'd want as reliable a set of drives as you could find (usb-nvme cases prob best at this time) and jbod for speed. s/w raid a bit too susceptible to update changes, hotplug events and random slowdowns for me in the end.

maybe hand that off to a small ethernet-connected pc as the storage controller via samba/nfs: a ghetto nas?