System and method for state preservation in a stretch cluster

Details System and method for state preservation in a stretch cluster System and method for state preservation in a stretch cluster

2005-06-21

2005-06-21

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130, C709S246000

Reexamination Certificate

active

06910150

ABSTRACT:
A system and method for preserving the data content of a network having a cluster is provided in which each of the network interface controllers of the servers of the cluster includes a copy of a set of data. Each of the network interface controllers includes a local power source, local memory, and an operating system, allowing the network interface controllers to remain in communication despite a failure to one or both of the associated servers. The data may be operational data that is critical to the operation of the cluster system. Alterations to the set of data can only be made by a write operation that is logically atomic or indivisible. Incomplete write operations are discarded unless a successful write operation is performed to both servers.

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