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 7844852 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 30, 2010

Filed:

Mar. 31, 2005
Applicant:

Takahiro Koishi, Tokyo, JP;

Inventor:

Takahiro Koishi, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Server apparatuses that configure a data mirror cluster system include databases, shared memories, and memory controllers, respectively. The server apparatuses are connected by interconnects and can directly access communication partner's shared memories via the memory controllers, respectively. One of the server apparatuses operates as an operation server apparatus and the other operates as a standby server apparatus. The memory controller of the operation system updates the database and writes changed data to the shared memory of the standby system. The memory controller of the standby system updates the database of the standby system according to the changed data written to the shared memory of the standby system.


Find Patent Forward Citations

Koishi, Takahiro. (2010). Data mirror cluster system, method and computer program for synchronizing data in data mirror cluster system (U.S. Patent No. 7844852). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7844852

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…