Apparatus and method for storage controller to deterministically kill one of redundant servers integrated within the storage controller chassis
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United States of America Patent
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Jan 15, 2008
Grant Date -
Jan 27, 2005
app pub date -
Apr 23, 2004
filing date -
Apr 23, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method for deterministically killing one of redundant servers on a common network is disclosed. The apparatus includes a chassis that encloses the servers and a storage controller, status indicators generated by the servers to the storage controller, and kill controls, generated by the storage controller to respective ones of the servers, each for killing a respective one of the servers. The status indicators and kill controls are wholly enclosed in the chassis. The kill controls deterministically disable the killed server on the network independently of the state of the server to be killed. That is, the server does not need to be able to respond to a command to be disabled on the network. In one embodiment, the kill controls comprise reset signals. After the storage controller deterministically kills one of the servers, the other server takes over the identity of the killed server on the network.
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