Replication using a special off-host network device

Details Replication using a special off-host network device Replication using a special off-host network device

2007-03-06

2007-03-06

Gaffin, Jeffrey (Department: 2165)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C709S226000

Reexamination Certificate

active

10326445

ABSTRACT:
Disclosed is a method and apparatus for replicating a data volume using a network appliance. In one embodiment, a first node transmits a first write-data transaction to a first data storage system and to the network appliance. A second node transmits a second write-data transaction to the first data storage device and to the network appliance. The network appliance transmits the first and second write-data transactions to a third node via a communication link for updating a replica of a data volume. The data volume is stored in the first data storage system and is updated with first and second data contained in the first and second write-data transactions, respectively. The replica of the data volume is stored in a second data storage system and is updated with the first and second data.

REFERENCES:
patent: 5819020 (1998-10-01), Beeler, Jr.
patent: 6324654 (2001-11-01), Wahl et al.
patent: 6816951 (2004-11-01), Kimura et al.
patent: 2002/0078315 (2002-06-01), Howard et al.
patent: 2003/0037108 (2003-02-01), Peiffer et al.
patent: 2003/0158998 (2003-08-01), Smith
patent: 2004/0220951 (2004-11-01), Howard et al.

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