Storage system with multiple copy targeting

Details Storage system with multiple copy targeting Storage system with multiple copy targeting

2008-04-04

2010-02-23

Lane, Jack A (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S161000, C711S165000, C704S204000

Reexamination Certificate

active

07669024

ABSTRACT:
A storage controller, cooperable with host computer apparatus, and a plurality of controlled storage apparatus, comprises a host write component operable to write a data object to a source data image at one of the plurality of controlled storage apparatus; a first copy component responsive to a first metadata state and operable to control copying of the data object to a first target data image at one of the plurality of controlled storage apparatus; a second copy component responsive to a second metadata state and operable to perform one of: controlling copying of the data object to a second target data image at one of the plurality of controlled storage apparatus; and causing the first copy component to perform copying of the second target data image to the first target data image.

REFERENCES:
patent: 6820180 (2004-11-01), McBreaty et al.
patent: 6976039 (2005-12-01), Chefalas et al.
patent: 7165141 (2007-01-01), Cochran et al.

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