Method and apparatus for data migration and failover

Details Method and apparatus for data migration and failover Method and apparatus for data migration and failover

2005-07-29

2009-12-29

Chace, Christian P (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S165000, C707S793000

Reexamination Certificate

active

07640409

ABSTRACT:
Method and apparatus for data migration are described herein. In one embodiment, in response to data received from an application to be written to a first storage volume, the data is written to the first storage volume and a second storage volume substantially concurrently. When the first and second storage volumes are synchronized, a switchover is performed from the first storage volume to the second storage volume, such that subsequent data received from the application is written to the second storage volume, where writing the data to the first and second storage volumes and the switchover are performed without knowledge of the application. Other methods and apparatuses are also described.

REFERENCES:
patent: 6145066 (2000-11-01), Atkin
patent: 6820098 (2004-11-01), Ganesh et al.
patent: 6845428 (2005-01-01), Kedem
patent: 7340571 (2008-03-01), Saze

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