Electrical computers and digital processing systems: multicomput – Computer network managing – Computer network monitoring
Reexamination Certificate
2004-10-07
2008-11-25
Vaughn, Jr., William C. (Department: 2144)
Electrical computers and digital processing systems: multicomput
Computer network managing
Computer network monitoring
C709S223000, C709S238000, C709S242000, C714S018000, C714S025000, C714S030000, C714S045000, C714S048000
Reexamination Certificate
active
07457871
ABSTRACT:
System, method and computer program product for identifying a failed component in a system comprising application servers, storage servers and a switch fabric. The switch fabric has first ports coupled to the application servers, second ports coupled to third ports of the storage servers and internal switches to interconnect the first ports to second ports. Each of the application servers compiles records of its own attempts to communicate with the storage servers via the switch fabric. Each of the records indicates one of the third ports and one of the storage servers for each of the communication attempts. From the records a determination is made if any of the communications was successful to one of the storage servers. If not, a determination is made that the one storage server may have failed. If any of the communications was successful to the one storage server, a determination is made that the one storage server is active and a determination is made from the records if any of the communications was successful to each of the third ports of the one storage server. If not, a determination is made that each of the third ports of the one storage server may have failed. If any of the communications was successful to each of the third ports, a determination is made that each of the third ports of the one storage server is active. According to a feature of the present invention, a determination is also made based on the records if a switch or first port has failed.
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IBM Technical Disclosure Bulletin vol. 38, No. 06 Jun. 1995 pp. 451-458.
International Business Machines - Corporation
Mirzadegan Saeed S
Samodovitz Arthur J.
Vaughn, Jr. William C.
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