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:
Oct. 31, 2023
Filed:
Jan. 31, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A duplex operation system including: a plurality of general-purpose devices on each of which a plurality of virtual machines are mounted; and a virtual machine controller that controls a duplex operation performed by two systems, an active system and a standby system, of the virtual machines. When detecting a failure of the active system, the virtual machine controller stops the virtual machine of the active system, activates the virtual machine of the standby system corresponding to the stopped active system, and reconfigures the standby system of the activated virtual machine on the hardware of the stopped virtual machine, and when detecting a failure in the virtual machine of the reconfigured standby system, the virtual machine controller reconfigures the standby system of the failed virtual machine on the general-purpose devicedifferent from the general-purpose devicein which the virtual machine of the active system has been stopped.