Method, software and system for multi-path fail-over...

Details Method, software and system for multi-path fail-over... Method, software and system for multi-path fail-over...

2007-10-09

2007-10-09

Le, Dieu-Minh (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S044000

Reexamination Certificate

active

10769583

ABSTRACT:
A method, software and system are disclosed for enabling multi-path error recovery of failed communicators with sequential storage device systems. In one embodiment, an information handling system (IHS) coupled to a sequential storage device via first and second communication paths is provided. Information exchanges between the IHS and the sequential storage device are monitored for communication path failure. In response to a failure event on a primary communication path, status of the halted information exchange is maintained by a host bus adapter and its supporting software on the IHS and in a fibre channel interface module of the sequential storage device. Status information regarding the halted information exchange is communicated to a fail-over host bus adapter of the IHS. The information exchange is completed on the fail-over communications path beginning from the point of failure such that data of the sequential information exchange is maintained in order.

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