Updated - Thecus has added a new version of its 8 bay 2U rackmount business NAS.
The N8900PRO steps up to a 3.4 GHz quad-core Intel Xeon E3-1275 processor paired with 8 GB of DDR3 RAM that's upgradeable to 32 GB total.
Eight hot-swappable bays support up to SATA III or SAS 6G 3.5" drives that can be configured into multiple ext3, ext4, Btrfs and XFS formatted RAID 0, 1, 5, 6, 10, 50, 60 or JBOD volumes with optional AES-256 bit encryption. Storage can be expanded to 576 TB of total raw capacity using SAS daisy-chaining with iSCSI thin provisioning.
Other hardware features include redundant power supply, three Gigabit Ethernet ports supporting 7 modes of failover and link aggregation, two USB 3.0 ports, six USB 2.0 ports, one eSATA port, analog audio output/input, and an HDMI port.
Further expansion is supported via three PCI-e slots (one 4-lane and two 8-lane), which can be used to add additional USB 3.0, eSATA ports or 10 GbE adapter.
The N8900PRO runs Thecus' V5 OS with features including High Availability, built-in McAfee antivirus protection, dynamic volume expansion and Snapshot backup (requires btrfs volume).
The N8900PRO starts shipping in September. MSRP is $2739.