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Distributed Check-Sum Approach for Clustered Disk Drives

IP.com Disclosure Number: IPCOM000037045D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue

IBM

Related People

Authors:
Donaldson, JE Ehrenbock, DJ Hicken, MS Potosky, PJ Severson, PS Wenner, RL Styczinski, DA [+details]

Abstract

Described is an approach for distributing check-sum data across clustered direct access storage devices (DASDs) to eliminate the burden of check-summing on one device. This minimizes the performance degradation associated with check-summing by averaging the check-sum maintenance task among all the devices. All devices are used for data operations and appear to have high performance actuators. (Image Omitted)