Hot standby memory copy system
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United States of America Patent
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Jun 16, 1992
Grant Date -
N/A
app pub date -
Jul 15, 1988
filing date -
Jul 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is an electronic exchange with a hot standby memory copy system including main storage devices that are duplexed wherein to improve the processing capacity of a central processing unit and make the best use of the speed of a cache memory, in an information processing apparatus provided with central processing units, main storage devices and cache memories all of which are duplexed, first-in first-out memories that are duplexed and connected to the central processing units, a unit for simultaneously writing data, when the central processing unit writes the data into the cache memory, into the first-in first-out memory, and a unit for writing, independently of an operation of the central processing unit, the contents of a currently used one of the first-in first-out memories into a standby one of the main storage devices are provided.
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