Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2009-12-10
2011-10-25
Baderman, Scott (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S021000
Reexamination Certificate
active
08046633
ABSTRACT:
A system and method for managing shared resources is disclosed. The system includes a primary coherency processing unit which processes lock requests from a plurality of data processing hosts, the primary coherency processing unit also storing a first current lock state information for the plurality of data processing hosts, the first current lock state information including a plurality of locks held by the plurality of data processing hosts. The system further includes a standby coherency processing unit storing fewer locks than the primary coherency processing unit, the locks stored by the standby coherency processing unit being a subset of locks included in the first current lock state information, the standby coherency unit configured to perform a plurality of activities of the primary coherency processing unit using the subset of locks in response to a failure of the primary coherency processing unit.
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Buckler Andrew D.
Finnie James L.
Huras Matthew A.
Palmer Stewart L.
Romanufa Keriley K.
Baderman Scott
International Business Machines - Corporation
Patel Kamini
Sughrue & Mion, PLLC
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