Excerpt: If you don’t need a lot of storage, Seagate’s diminutive BlackArmor NAS 220 can be tucked into a bookshelf or the even the corner of your desk where it will quietly serve the needs of a small office or workgroup with as many as 20 PCs. The NAS 220 has two drive bays and can purchased with either one or two terabytes of capacity; we reviewed the 2TB model, which is street-priced at $279.
Pros: Relatively fast read speeds; useful software utilities; integrated iTunes and DLNA media servers; quiet.
Cons: Small capacity; no integrated BitTorrent client; no eSATA port.
Excerpt: Seagate makes the hard disks that are fitted inside this NAS, which perhaps explains why the company is able to offer 4TB of storage for just £212. That's just a little over 5p per gigabyte, making it the most economical NAS we've ever seen. The pair of 2TB disks can be configured as either RAID 0 or 1. Advanced users will be disappointed to discover that the BlackArmor isn't designed to be user serviceable.