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:
Jun. 29, 2010
Filed:
Jul. 29, 2004
Nadir Khalid Amra, Rochester, MN (US);
Kevin Glynn Paterson, Rochester, MN (US);
Steven John Simonson, Rochester, MN (US);
Arthur Douglas Smet, Rochester, MN (US);
Nadir Khalid Amra, Rochester, MN (US);
Kevin Glynn Paterson, Rochester, MN (US);
Steven John Simonson, Rochester, MN (US);
Arthur Douglas Smet, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A networked computer system provides a way to quickly switch to a backup data center when a primary data center fails. Each data center includes a redirect table that specifies a geographical area corresponding to each user. The redirect table is replicated on one or more data centers so that each data center has the same information. When a data center fails, the redirect table in one of the non-failed data centers is updated to specify a new data center for each client that used the failed data center as its primary data center. A network dispatcher recognizes that the failed data center is unavailable, and routes a request to the backup data center. Network routing logic then issues a redirection command that causes all subsequent requests from that client to be redirected directly to the backup data center.