RECycled or RECondite NETwork - you decide
Butler is a Raspberry Pi Model B (a very early one at that!)
It acts as the main web, ssh, DNS and mail server for the network, along with running the HECnet bridge software and some other bits and bobs.
Named for its function as basically something that answers the network door (and in memory of the Butler machine on the Lap Of The Gods BBS), the photo is of course of Reg Varney, who played Stan Butler in "On The Buses".
Uptime is looking like this:
At the moment, these people are logged in:
09:49:59 up 84 days, 10:57, 0 users, load average: 0.06, 0.11, 0.15