Is anybody else using the Apace Vstor product? We have an older 2U Vstor that is built using 250 Gb drives for a small 1.5 Tb of total space. We're wondering if we can put larger drives in. Wondering if we can put 2 Tb drives in or if the Vstor tops out at 1 Tb. We would copy everything off the vstor (and back it up on two drives!), put the larger drives in, and let it format them.