Method and apparatus for immunizing applications on a host...

Details Method and apparatus for immunizing applications on a host... Method and apparatus for immunizing applications on a host...

2004-05-13

2008-08-26

Puente, Emerson C (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S004110, C714S048000, C709S223000, C709S224000

Reexamination Certificate

active

07418633

ABSTRACT:
A method and apparatus for providing host server immunization from a failover process that may occur within a data switch that couples the host server to a storage volume. To facilitate such immunization, the method and apparatus caches non-read/write information that is generated by the switch during initialization of the storage volume to host server communication. Upon failover of a switch component within a failover pair of switch components in the switch, the read/write requests issued by the server are ignored and any non-read/write information commands are responded to using the cached information.

REFERENCES:
patent: 6502162 (2002-12-01), Blumenau et al.
patent: 6996672 (2006-02-01), Lubbers et al.
patent: 2002/0129146 (2002-09-01), Aronoff et al.
patent: 2003/0236930 (2003-12-01), Paul
patent: 2004/0148397 (2004-07-01), Aronoff et al.
Microsoft Computer Dictionary, 2002, Microsoft Press, 5th Ed., pp. 81.

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