The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8321642 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 27, 2012

Filed:

Jun. 02, 2011
Applicants:

Tomoya Anzai, Ebina, JP;

Takahiro Nakano, Yokohama, JP;

Inventors:

Tomoya Anzai, Ebina, JP;

Takahiro Nakano, Yokohama, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The information storage system of an aspect of the present invention includes a first differential data storage area which stores differential data of a higher volume from a first point of time to a second point of time, a lower snapshot manager which provides a lower snapshot at the second point of time of the higher volume, and a second differential data storage area which stores differential data of the higher volume after the second point of time. The higher snapshot manager acquires a plurality of generations of higher snapshots from the lower snapshot and the data in the first differential data storage area and acquires a plurality of generations of higher snapshots from the data of the higher volume and the data in the second differential data storage area.


Find Patent Forward Citations

Anzai, Tomoya. (2012). Information storage system, snapshot acquisition method, and data storage medium (U.S. Patent No. 8321642). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8321642

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