Home-brewed NAS gluster with sensible replication
Hardware
I'd say "every sufficiently advanced user is indistinguishable from a sysadmin" (yes, it's a play on famous Arthur C Clarke's quote), and it doesn't take much of "advanced" to come to a home-server idea.
And I bet the main purpose for most of these aren't playground, p2p client or some http/ftp server - it's just a storage. Serving and updating the ...