QNAP TS-221, NAS, Tower, Marvell, 1 GB, DDR3, 8 TB QNAP TS-221. Type: NAS. Chassis type: Tower. Device class: Small & Medium Business. Processor family: Marvell, Processor frequency: 2 GHz. Internal memory: 1 GB, Internal memory type: DDR3. Total installed storage capacity: 8 TB, Installed storage drive type: HDD. Operating system installed: QNAP Turbo System https://www.expertreviews.co.uk/qnap/52740/qnap-turbonas-ts-221-review Conveniently, the TS-221 provides a handy web-based setup page that includes an illustrated guide to installing drives and connecting to your network. Once physically installed, you can use a bundled utility to set the RAID type you want to use, from a se... This is a perfectly good NAS device, but you can get something much more powerful for only a little more money...