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.:
Date of Patent:
Mar. 24, 2015
Filed:
Apr. 10, 2012
Applicant:
Yukihiro Tanaka, Tokyo, JP;
Inventor:
Yukihiro Tanaka, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G06F 11/20 (2006.01); G06F 11/14 (2006.01);
U.S. Cl.
CPC ...
G06F 11/2097 (2013.01); G06F 11/1438 (2013.01); G06F 11/1484 (2013.01); G06F 11/2028 (2013.01); G06F 11/2038 (2013.01); G06F 11/2048 (2013.01);
Abstract
A fault-tolerant computer system that includes a computer including a virtual machine on which a guest operating system (OS) is operating and a computer in operation, the computer including a snapshot manager that saves a guest OS snapshot, which includes difference information at each checkpoint, of the guest OS in a memory of the computer, and sends an instruction at each checkpoint to copy the guest OS snapshot as a guest OS snapshot to a memory of a computer via a transfer unit, and that computer includes a snapshot manager that activates a guest OS based on the guest OS snapshot when the computer stops.