Multi-site remote-copy system

Details Multi-site remote-copy system Multi-site remote-copy system

2007-04-26

2008-12-02

Elmore, Stephen C (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S100000, C711S111000, C711S112000, C711S156000, C707S793000, C714S006130, C714S015000

Reexamination Certificate

active

07461226

ABSTRACT:
Two storage areas are created in a first storage subsystem, a synchronous remote copy is performed from a first storage area included in the first storage subsystem to a storage area included in a second storage subsystem, and an asynchronous remote copy is performed from a second storage area included in the first storage subsystem to a storage area included in a third storage subsystem. Besides, a computer accessing the first storage subsystem performs mirroring to both the storage areas included in the first storage subsystem.

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