Patent ID: 7949825
Filing Date: 2011-05-24
Classification: G06F,G11B

Abstract:
1. A data storage system comprising: a common power supply having a cabling; and a plurality of disk drives, each disk drive in the plurality of disk drives receiving power from the common power supply via the cabling, at least one of the plurality of disk drives serving as a master disk drive and at least one of the plurality of disk drives serving as a slave disk drive; wherein the at least one master disk drive is operative to generate a synchronization signal based on a rotational position of at least one disk within the at least one master disk drive, modulate a carrier with the synchronization signal to produce a modulated signal, and transmit the modulated signal to the cabling of the common power supply; and wherein the at least one slave disk drive is operative to receive the modulated signal from the cabling of the common power supply, demodulate the received modulated signal to recover the synchronization signal, and modify a rotational position of at least one disk within the at least one slave disk drive based on the recovered synchronization signal.