For 'dark' storage something in the style of AWS Glacier storage would probably do the trick from an environmental point of view. Drives can be filled and then

For 'dark' storage something in the style of AWS Glacier storage would probably do the trick from an environmental point of view. Drives can be filled and then left unplugged and only spun up when data is requested which apparently isn't very often. I seem to vaguely recall that some of the glacier data was just put on Blu-ray discs and filed away. Seems like a viable solution and with the cloudesq abstraction it doesn't necessarily matter so long as it's being done properly. Of course I suspect the environment is being used as convenient excuse to people with environmental policies.