HU 42: TOR switch. 41-40: management server (2U). 39: git server for `fish` (1U). 38: build server for `fish` (1U). 37-28: fish (10U). 27-24: plan9s. 23-14: plants. 13-5: plumbing. 4-1: UPS.
Don't put your UPS under a fishtank, folks. It becomes an IPS when it gets wet.
You know, maybe I should reconsider having my UPS at the bottom of a rack that contains one server in the middle with liquid CPU cooling... Or just add a liquid sensor between them somewhere perhaps.
Contrary to popular belief, one drop of water on the case of an electronic rarely breaks it. You do need to get a substantial amount inside the electronic to break it.
I remember building a water sensor kit as a kid and going to the bathtub to try sensing water and my mom rushed in and stopped me because I was putting electronics near water.
Unless the UPS catches fire, which would be bad.
You could put some absorbent or barrier material in between for paranoia. Don't need a whole new rack, although you could.
...also, maybe I'm reading too much into this, but why not "a programmer and her quant bf"? She's the one who wrote the article on her own blog, and this is primarily a community of programmers.