Patent ID: 8839026

Claim:
A method of automatic disk power-cycle, for use in a storage system comprising one or more disk enclosures comprising a plurality of disks located in respective disk slots in said enclosures, said enclosures being adapted to be controlled by enclosure control commands, the method comprising: receiving disk fault information indicative of errors occurring in a certain disk of the plurality of disks; estimating, based on the disk fault information, whether or not the certain disk undergoes a media failure; if it is estimated that the certain disk does not undergo the media failure, activating a power cycling for the certain disk, by sending to a disk enclosure, containing a disk slot corresponding to the certain disk, a first request to turn off the disk slot, and sending to the disk enclosure, a second request to turn on the disk slot; and in response to a write command for writing modified data, directed to the certain disk while being power-cycled, writing the modified data to an alternative disk in the storage system, in accordance with a log-write technique.