OWC, Other World Computing, has launched a product that could easily be mistaken for a NAS (network-attached storage) device, but it actually is a Thunderbolt external storage unit.
That means that it is supposed to connect to a PC via a Thunderbolt port, and perform backup tasks (via Time Machine especially, on Mac systems), or A/V post-production, photography, music, graphics, data management, etc.
One of the main assets is the top capacity of 16 TB, reachable by installing a 4 TB HDD in each of the four bays.
The other asset is the data rate of up to 887 MB/s when reading and 884 MB/s when writing. A truly staggering performance.
It's too bad Thunderbolt is used sparingly outside Apple Mac computers.
Oh well. The ThunderBay IV, as OWC's invention is called, has a price ranging from $495 / €361 (no drives) to $1,400 / €1,021 (4 drives, 16 TB capacity).