Am looking for the right NAS to support both storage and VM capability. Needs to be rack mounted and no more than 310-320 mm deep. Was looking at Synology DS918, but it's not really VM capable. Want to run 2-3 OS's in VMs with 2-3 users. Needs to support MAC and Windows back-ups. Like SHS-2 RAID, but not wed to it. Optimize storage space with reliable back-up. Thinking I'll load initially with 4x 1TB Samsung SSD 860 EVO 2.5 Inch SATA III Internal SSD (MZ-76E1T0B/AM) or similar.