Storage Technology Corporation

JoEtta S Chikira

Nancy R Jurestovsky

Fletcher L Hill

David Grant Beal

Michael R Stephens

The knowledge based system identifies the occurrence of a failure within the customer equipment and functions using its rules, hypotheses and collected data to isolate the functional resource which is the source of the error in the customer equipment and, whenever possible, 'fence' or isolate the failed functional resource that has caused the error. In addition, the knowledge based system makes use of resource related rules to remove a resource or set of resources available for concurrent other failure management operations. The resource related rules allow resources to function in any one non-operational or operational mode or to functional simultaneously in multiple non-operational modes.

Knowledge based resource management

The resource management system first fences all autonomous resources, then shared resources required for a first activity. The first activity is then executed and the domain for the next activity examined to identify common fencing requirements. If the shared resource fencing is unaltered between successive activities, then to resource modification is required and the second activity is immediately executed. Otherwise, the shared resources of the first activity are returned to functional use and the shared resources required for the second activity are then fenced. Release of the autonomous resources is deferred to enable the immediate execution of the second activity. Once the last activity in the work stream is completed, all fencing is removed and all resources returned to functional use.

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Louisville, CO, United States of America

JoEtta S Chikira