I built a new Node-0 cabinet to replace my metal wall cabinet type. The main reason was to get a bit more height and also some more depth at the bottom where it tucks under the roof apex so that I can fit some deeper server cases in there.
But whilst I was at it I changed my fan arrangement. Instead of trying to suck hot air out I now blow cooler air in. This means that in hot weather I am not sucking hot air from the roof void into the cabinet through any leaks. The air is blown in at the bottom rear corner and passes to the front through a plenum, since most equipment I have seems to suck in at the front.
Continue reading Too Darn Hot.
