Data-migration method

Details Data-migration method Data-migration method

2007-09-11

2007-09-11

Portka, Gary (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C709S214000, C711S161000, C711S221000

Reexamination Certificate

active

11517386

ABSTRACT:
A method of migrating data from an old storage subsystem to a new storage subsystem in a data processing system which comprises host computers and storage subsystems. There is provided a route-changing phase before the data is migrated from the old storage subsystem to the new storage subsystem. In the route-changing phase, each host computer can access both the old and new storage subsystems and the new storage subsystem writes data into the old storage subsystem in response to a write request from the host computer and reads data from the old storage subsystem and sends the data to the host computer in response to a read request from the host computer.

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EMC Proposed Symmetric Data Migration Services (EMC Corporation), http://japan.emc.com/pdg/products/sdms/sdms—ds.pdf.

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