Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2006-01-03
2006-01-03
Iqbal, Nadeem (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S005110, C714S006130
Reexamination Certificate
active
06983397
ABSTRACT:
Provided is a method, system, and program 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.
REFERENCES:
patent: 4010450 (1977-03-01), Porter et al.
patent: 5140592 (1992-08-01), Idleman et al.
patent: 5212785 (1993-05-01), Powers et al.
patent: 6571355 (2003-05-01), Linnell
patent: 2002/0133736 (2002-09-01), Faber et al.
American National Standard for Information Technology. “Serial Storage Architecture- Transport Layer 2 (SSA-TL2)”, Revision 5b, Apr. 1, 1997, pp 1-107.
Blunden, M. and P. Staples. “Understanding SSA Subsystems in Your Environment”, © International Business Machines Corporation 2000. 1stEd., Apr. 2000. pp. 1-151.
Judd, I.D., P.J. Murfet, and M.J. Palmer. “Serial Storage Architecture”,IBM Journal of Research and Development. [online] vol. 40, No. 6, 1996. [Retrieved on Nov. 12, 2001]. Retrieved from the Internet at <URL: http://www.research.ibm.com/journal/rd/406/judd.html>.
IBM Corp. “Serial Storage Architecture: A High-Performance Open Storage Interface”, [online] © International Business Machines Corporation 1997. [Retrieved on Nov. 11, 2001]. Retrieved from the Internet at <URL: http://ssdweb01.storage.ibm.com/harsoft/ssaovu.htm>.
U.S. Appl. No. 09/998,370 filed on Nov. 29, 2001, entitled “Method, System, and Program for Error Handling in a dual Adaptor System Where One Adaptor is a Master”, invented by D.R. Kahler, K.A. Nielsen and M.P. Vageline.
Fairhurst Matthew John
Jones Michael John
Legvold Vernon J.
Vageline Michael P.
Bonura Timothy M.
Iqbal Nadeem
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