A system start-up routine is implemented to determine system device power requirements and system power capabilities, determine a maximal number of devices which can be started at one time, and start the maximal number of devices. The devices are, for example, direct access storage devices, i.e., disk...http://www.google.com/patents/US6233693?utm_source=gb-gplus-sharePatent US6233693 - Smart DASD spin-up
