Reversing a communication path between storage devices

Details Reversing a communication path between storage devices Reversing a communication path between storage devices

2005-12-13

2005-12-13

Chace, Christian P. (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S150000, C711S111000, C714S006130, C707S793000, C707S793000, C710S031000

Reexamination Certificate

active

06976139

ABSTRACT:
Reversing a communication path between a first volume on a first storage device and a second volume on a second storage device includes suspending communication between the first and second volumes while maintaining operations for other volumes of the storage devices, causing the first volume to change from a source volume to a destination volume without destroying the first volume, causing the second volume to change from a destination volume to a source volume without destroying the second volume, and resuming communication between the first and second volumes. Causing the first volume to change from a source volume to a destination volume may include modifying a table of the first storage device. Causing the second volume to change from a source volume to a destination volume may include modifying a table of the second storage device.

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