@starbreaker @walruslifestyle my experience running a dozen of old servers in a basement with 20 volunteers

- needs airco running 24/7
- used to draw too much power causing a voltage drop, destroyed a UPS that was compensating for it
- upgrading a building's power capacity is, put mildly, non-trivial
- uni pays power costs because it would bankrupt our little non-profit
- a good UPS can bridge an hour-long power outage so that's nbd

not sure why you want collocation but I'd just rent a dedi