I started a blog post about this, but it talked about terabytes NASs, HDTV DVRs, VoIP / SIP, LDAP, DNS caches, NTP strata, and a bunch of acronyms.
So instead I’ll be incredibly precise. This PC, seemingly sold only at Walmart, is really cool. It’s not that fast. Its specs are bad any way you look at them. Unless you look at power consumption. 20 Watts peak power, 2 Watts average. By comparison, my desktop machine has a 300 Watt power supply. For someone who wants to set up an always-on Linux server, this thing is screaming your name. I’m strongly attracted to the idea of setting this thing up with handful of 500 GB drives, to build a network fileserver with a terabyte or two of capacity. And doing software RAID across them. (I’m fairly certain that the hard drives would draw more power than the whole system… Although you could set up power-saving features, since a home fileserver could surely power down the drives periodically.)
There’s also a cheaper one that seems to be the same, except it comes with 512 MB RAM instead of a gig, and comes with gOS instead of Vista. I’m dying to play with OpenFiler, a Linux-based “appliance” software package for some superb fileserver tools.