Automatic switching method of a right of management/control for shared-storage unit
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United States of America Patent
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Dec 2, 1997
Grant Date -
N/A
app pub date -
Nov 15, 1996
filing date -
Sep 17, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An automatic method for switching a right of management/control for a shared-storage unit between a plurality of service processors in a cluster-coupled system having a shared-storage unit with a service processor selecting register and a plurality of clusters connected to the shared-storage unit, each clusters having a service processor, includes the steps of: registering a physical number of the service processor which acquires the right of management/control in the service processor selecting register; and providing a communication line connecting all service processor; wherein when a first cluster detects power-off or hang-up message from the cluster which includes the service processor registered in the service processor selecting register through the communication line, the first cluster determines a new physical number of the service processor which acquires the right of management/control based on a predetermined decision theory, and registers the determined physical number in the service processor selecting register.
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