It would qualify as an external HDD if it didn't have LAN instead of USB
Since HDDs have such high capacities now that they can actually play the role of network-attached storage devices individually.I-O Data has taken advantage of this. It has formally introduced the LANDisk HDL-AS, a NAS server in either 2 TB or 3TB.
One Gigabit Ethernet port is available for connection to any existing network.
The sustained throughput can go as high as 90 MB/s and the software included with the purchase allows for programmed recording of data streams, among other things.
Sales will start in the middle of February 2013. The 2 TB NAS will have a price of 26,565¥ ($292 / 215-292 Euro) and the 3Tb will sell for 36,645¥ ($403 / 297 Euro).
I-O Data's item measures 45 x 138 x 168 mm / 1.77 x 5.43 x 6.61 inches and weighs 1.2 kilograms / 2.64 pounds.