I’ve been reading Greening Through IT by Bill Tomlinson and has been a pretty good read so far. I’m halfway through so I can’t give a big review, but I can say that I found it very interesting and gives me new outlook on nature in life in general.
Although I haven’t reached specific ways of greening in my situation via the book, I’d thought I would at least list some ways that we do it at work.
- Lab computers are turned off soon after the lab closes and automatically turn back on in the morning before labs start.
- Servers are set in the BIOS to have power settings controlled by the O/S so when there’s no load on the server, the cpu’s are running at a slower clock speed. The newer r610s that we have I haven’t played with comparing it with O/S mode and some other mode that I’ve forgotten what’s it’s called.
- A/C aren’t set to be super cold: we’ve raised them to be in the 70s so they don’t need to be wasting a ton of energy trying to cool everything down a lot.
- Warm and cold aisles of racks. We have raised floors with air vents that are only in the cold aisles and then have the backs of other racks face each other for the warm aisles with cool vents in the floor. This keeps our cooling more efficient and “should” be more “green.”
- Monthly maintenance of the A/C units. I try to make sure the A/C units are running with solid belts so that they are running optimally all the time. Broken belts cause some low air flow wastes much energy.
- Virtualization. Everyone always talks about consolidation, but it’s really easy to dump a few vm’s on newer servers and just assign a core to each of them. We removed an old sun server recently and replaced it with a vm and it barely takes any load on the server. We use xen on centos as our vm technology of choice.
So there’s a few that I can think of at the top of my head. Stay green!