The $300 Mercury Pro U.2 Dual is a Thunderbolt 3 storage box featuring two U.2 (a server and enterprise-level NVMe connector) bays. To add up to the eight M.2 SSDs touted by OWC, you have to use a four-slot OWC Shuttle U.2 to M.2 caddy/adapter included in the box, and then buy another adapter ($150) to max out at eight SSDs and 64TB. Or you can buy it pre-populated from OWC.
For eight drives (fastest), pricing starts at $1,500 for 4TB and ends at a whopping $12,799 for 64TB. Yup, 8TB SSDs are pricey. Note that running mirrored RAID 1 or mirrored/striped RAID 1+0 will halve available capacity.
Regardless, the bare box allows you
