Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2006-07-11
2006-07-11
Beausoliel, Robert (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S005110, C714S042000
Reexamination Certificate
active
07076687
ABSTRACT:
A method for failure detection comprises: checking, at a first time, a state of a local volume that is mirrored at a second location; issuing a change state command to the local volume; checking, at a second time, the state of the local volume after a host at the second location issues a change state command; comparing the state of the local volume at the first time and at the second time; and initiating a fail over procedure if the state of the local volume is different at the second time from the first time.
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Abe Toshiyuki
Fujibayashi Akira
Yamagami Kenji
Beausoliel Robert
Maskulinski Michael
Pogodin, Esq. Pavel
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