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US Patent 7143122 Data replication in data storage systems

Patent 7143122 was granted and assigned to Pillar Data Systems on November, 2006 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors

Is a

Patent

Patent attributes

Current Assignee

Pillar Data Systems

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7143122

Patent Inventor Names

Noel Simen Otterness0

David Alan Burton0

Kurt Alan Shoens0

Date of Patent

November 28, 2006

Patent Application Number

10696327

Date Filed

October 28, 2003

Patent Primary Examiner

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Shahid Al Alam

Patent abstract

The present invention relates to system and method of asynchronous data replication. In an embodiment, the system includes a primary host that asynchronously transmits write and sync commands where each write and sync command includes a data set ID and a sequence number. A secondary host coupled to the primary host receives the write and sync commands out of order, tracks receipt of write and sync commands, and after receipt of the write and sync commands of the data set writes blocks associated with the write commands to data storage coupled to the secondary host.