Inventors:
Jerry D. Ackaret - Beaverton OR, US
Justin P. Bandholz - Cary NC, US
Brian E. Bigelow - Apex NC, US
Joseph E. Bolan - Cary NC, US
Kevin M. Cash - Cary NC, US
David L. Cowell - Garner NC, US
Martin J. Crippen - Apex NC, US
Christopher L. Durham - Research Triangle Park NC, US
Jeffery M. Franke - Apex NC, US
James E. Hughes - Apex NC, US
David J. Jensen - Raleigh NC, US
John K. Langgood - Cary NC, US
Bay Van Nguyen - Durham NC, US
James A. O'Connor - Ulster Park NY, US
Derek Robertson - Durham NC, US
John M. Sheplock - Raleigh NC, US
Wilson E. Smith - Bahama NC, US
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G06F 11/00
Abstract:
A method and circuit for implementing an enhanced availability personality card for a chassis computer system, and a design structure on which the subject circuit resides are provided. The personality card includes a first erasable programmable read only memory (EPROM) and a second EPROM, each EPROM storing Vital Product Data (VPD) and a first temperature sensor and a second temperature sensor sensing temperature. A primary bidirectional bus and a redundant bidirectional bus are respectively connected between the first EPROM and the first temperature sensor and the second EPROM and the second temperature sensor, and a pair of chassis management modules. Each chassis management module includes a switch connected to both the primary bidirectional bus and the redundant bidirectional bus providing redundant paths, enabling continued function with failure of any critical personality card component.