Fail-over switching system

Details Fail-over switching system Fail-over switching system

1998-06-26

2000-10-03

Hua, Ly V.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 4, 714 9, G06F 1100

Patent

active

061287504

ABSTRACT:
A recovery method for use in a data storage system in which a plurality of data storage devices are connected to each of two communication paths. A switch may route requests to either of the two communication paths. With one data storage controller in communication with the data storage devices over a first path and a second data storage controller in communication with the data storage devices over a second path, upon detection of a malfunction on the first path, a data storage controller may request access to the other path. Thereafter, the controller may be switched into connection with the remaining operable path so as to share that path with the other controller.

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