System and method for identifying block-level write...

Details System and method for identifying block-level write... System and method for identifying block-level write...

2006-05-30

2006-05-30

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Data transfer specifying

C711S114000, C711S161000, C711S162000

Reexamination Certificate

active

07054960

ABSTRACT:
A method involves generating a block-level write operation, which causes a value to be written to a primary volume, and generating information indicative of whether any of the block-level write operation should be transferred to a secondary site during replication of data in the primary volume. The information can indicate that all, part, or none of the block-level write operation should be transferred to the secondary site. If the information indicates that less than all of the block-level write operation should be transferred to a secondary site, the information can also indicate that logical information associated with the block-level write operation should be transferred to the secondary site instead of transferring the value being written by the block-level write operation.

REFERENCES:
patent: 5875478 (1999-02-01), Blumenau
patent: 6460123 (2002-10-01), Blumenau
patent: 2003/0074378 (2003-04-01), Midgley et al.
patent: 2004/0243775 (2004-12-01), Coulter et al.

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