[Aheinemann]

HP N54L.

4x 3.5" internal drive-bays with trays (no hot-swap), 1 External 5.25" bay, 1 internal 3.5" bay, 2 PCI-E, 8 GByte ECC, takes 4 TB drives, 6 external USB2, 1 external E-Sata, 1 GB/s NIC. There is an HP-ILO Card for out-of-band servive - access to bios, power down. 1 internal usb (could boot OS from USB...)

excellent VPN / and storage server (VPN ~ 340 MBit/s AES 256 throughput) (put VPN Server in virtual machine)

mini-server ist suff. powerful to run data server at high speed. 5x4 TB raw ~ 16 TByte Raid 5 storage size, 1 additional external hot spare possible.

[IbJacked]

There seems to be a lot of love for these things. It's hard to give up the 4-core xeon and the lower price of the TS140, definitely food for thought. Thanks!

Edit: Based on the reviews, it looks like it has previously been on sale for as little as $229 after rebates, which would make it a much easier choice than the current $399.