Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2007-12-19
2010-02-09
Chu, Gabriel L (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S013000
Reexamination Certificate
active
07661022
ABSTRACT:
Provided is a system for processing Input/Output (I/O) requests to a storage network including at least one storage device and at least two adaptors, wherein each adaptor is capable of communicating I/O requests to the at least one storage device. An error is detected in a system including a first adaptor, wherein the first adaptor is capable of communicating on the network after the error is detected. In response to detecting the error, a master switch timer is started that is less than a system timeout period if the first adaptor is the master. An error recovery procedure in the system including the first adaptor would be initiated after the system timeout period has expired. An operation is initiated to designate another adaptor in the storage network as the master if the first adaptor is the master in response to detecting an expiration of the master switch timer.
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U.S. Patent Application entitled “System and Program for Error Handling in a Dual Adaptor System Where One Adaptor is a Master”, U.S. Appl. No. 12/350,821, filed Jan. 8, 2009, by inventors M.J. Fairhurst, M.J. Jones, V.J. Legvold, and M.P. Vageline.
Fairhurst Matthew John
Jones Michael John
Legvold Vernon J.
Vageline Michael P.
Chu Gabriel L
Dutta Rabindranath
International Business Machines - Corporation
Konrad Raynes & Victor LLP
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