Storage switch asynchronous replication

Details Storage switch asynchronous replication Storage switch asynchronous replication

2008-05-13

2008-05-13

Portka, Gary (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Memory configuring

C710S316000, C711S162000, C707S793000

Reexamination Certificate

active

07373472

ABSTRACT:
Systems and methods in accordance with embodiments are provided for the replication of data from virtual logical units to remote virtual logical units. Change logs can be provided at a primary storage switch including a primary VLU to indicate changes made to the primary VLU between replications. The change log can also be used to resynchronize a member split from the primary VLU during a replication operation. Members can be split from the primary VLU and used in a split virtual logical unit at the primary VLU for replication. The remaining member(s) of the primary VLU can be used to maintain the primary VLU online for host devices during the replication operation. A remote VLU at a remote storage switch can be exported as a physical logical unit to the primary storage switch where it is provisioned for a member of a replication VLU at the primary storage switch.

REFERENCES:
patent: 6886086 (2005-04-01), Kobayashi et al.
patent: 6961812 (2005-11-01), Bjork et al.
patent: 6993635 (2006-01-01), Gazit et al.
patent: 7152078 (2006-12-01), Yamagami
patent: 7155465 (2006-12-01), Lee et al.
patent: 7188222 (2007-03-01), Micka et al.

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