A storage system capable of reducing the start-up time of disk drives is provided. If a power source monitor circuit itself is normal (S93), the power source monitor circuit reads a detection signal from a detection circuit, and checks power sources (S94). If the power sources are normal (S95), all disks...http://www.google.com.au/patents/US7023642?utm_source=gb-gplus-sharePatent US7023642 - Storage system for monitoring disk drive spin-up and reducing start-up time
