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Remote Power Control for the disk array enclosure

IP.com Disclosure Number: IPCOM000015533D
Original Publication Date: 2002-Apr-01
Included in the Prior Art Database: 2003-Jun-20

Publishing Venue

IBM

Abstract

Disclosed is a system for the computer and storage system made of multiple enclosures with individual power supply units to be turned on or off altogether by a single system power switch. Each enclosure contains a Remote Power Controller and one or more power supply units that are controllable by the remote power controller. The power supply unit always supplies the stand-by power to the remote power controller. The main output of the power supply unit is enabled or disabled by the remote power controller. The remote power controller has an input port and an output port for the external connection. The output port of one enclosure is connected to the input port of the next enclosure by a cable and the multiple enclosures form a remote power control loop as Figure 1. The cable carries two signals; one is a power control signal and the other is a heartbeat signal. The power control signal is a request to turn on or off the enclosure and the heartbeat signal transmits the status of the enclosure to the next enclosure. Power Control Signal Heartbeat Signal