The combination of:
- large data collections
- error rate of typical HD
- file system not designed for robustness
creates the need for a device providing better data survivability than current NAS at a reasonable operating cost.
(my own testing shows 45 W/h for ATOM based 2 HD NAs and 115 W/H for Core2Duo 6HD NAS, translating to as many $ or Euro/year, ergo 45 $/y or 115$/y in electricity)
Tonido and Dockstar/Flexstar cloud approach work a lot like QNAP/Synologic backup-over-network systems (don't know about thecus offer).
but do not address data quality.
The only one Filesystem i am aware of that provide much better data survivability is ZFS.
EDIT: from either HD failure or from operator error (through snapshot)
The other one is btrfs (ZFS may be a small step ahead, though
Can any plug (including the annonced 2.0 Ghz part) run ZFS (either Freebsd 9.0 or a light Opensolaris distribution such as EON) ?
Well, FreeBSD folks suggest to run ZFS preferably on 64-bit machines with enough RAM. So while it could be possible, it most likely isn't fun.
BTW: My plug happily runs Linux from btrfs formatted ESata.