Hitachi Assigned Patent

Hitachi Ltd., Tokyo, has been assigned a patent (8,145,603) developed by Kenji Yamagami, Los Gatos, CA, for a "method and apparatus for data recovery using storage based journaling."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "A storage system maintains a journal and a snapshot of one or more data volumes. Two journal entry types are maintained, an after journal entry and a before journal entry. Two modes of data recovery are provided: ‘fast’ recovery and ‘undo-able’ recovery. A combination of both recovery modes allows the user to quickly recover a targeted data state."

The patent application was filed on Feb. 28, 2006 (11/365,096).