Tweaknews posted a review on the QNAP TS-809 Pro Turbo 8 Bay NAS

If several terabytes of storage and a ton of features are what you need, than the TS-809 Pro NAS will have your business network covered both now and in the future. The eight drive bays combined with robust processing power and a much improved interface provide reliable storage and a host of other server functions for up to 512 network users.

QNAP TS-809 Pro Turbo 8 Bay NAS Review