QNAP TS-809 Pro Turbo NAS is the world's first 8-bay network attached storage server which incorporates vertically mounted hot-swappable SATA hard drives, with up to 16TB storage capacity, RAID 0/1/5/6/5+spare, Online RAID Capacity Expansion, Online RAID Level Migration, and other advanced features such as built-in iSCSI target with Thin Provisioning, AES 256-bit volume-based encryption, automatic policy-based IP blocking, volume status report, syslog server, schedule on and off, Wake on LAN, instant SMS alert, and 4 IP cameras for network surveillance etc..
BTW we have a review right here on the TS-439 Pro Turbo NAS. Have a peek to get an idea of what these units though. Expensive, but brilliant really.