Less disk drive energy

Intel and AMD have spent billions trying to lower the energy consumption of their chips.

Yet disk storage is responsible for consuming 30 percent of the energy in a PC and up to 50 percent of the energy in a data center.

Disk drive companies have done very little.

Until now. Using metal foil.

A $24 10-gigabyte 0.85-inch drive can spin up, read or write data, then shut down again, all in less time than it takes to perform the same task using flash.