Apparatus, system, and method for synchronizing an...

Details Apparatus, system, and method for synchronizing an... Apparatus, system, and method for synchronizing an...

2007-05-29

2007-05-29

Nguyen, T (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S162000, C714S006130

Reexamination Certificate

active

10838767

ABSTRACT:
An apparatus, system and method for synchronizing an asynchronous mirror volume using a synchronous mirror volume by tracking change information when data is written to a primary volume and not yet written to an asynchronous mirror, and storing the change information on both the primary storage system and the synchronous mirror system. In the event the primary storage system becomes unavailable, the asynchronous mirror is synchronized by copying data identified by the change information stored in the synchronous mirror system and using the synchronous mirror as the copy data source.

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