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. 23, 2007
Filed:
Jun. 01, 2004
Dave D. Mccrory, Austin, TX (US);
Robert A. Hirschfeld, Austin, TX (US);
Dave D. McCrory, Austin, TX (US);
Robert A. Hirschfeld, Austin, TX (US);
Surgient Inc., Austin, TX (US);
Abstract
A shared-nothing virtual cluster including multiple virtual servers located on a corresponding number of physical servers linked together via a network. The virtual servers collectively form an active/passive (A/P) cluster including an active virtual server and at least one passive server. The shared-nothing virtual cluster further includes an interlink and multiple virtual drives located on the physical servers. The active virtual server handles a cluster load and executes a first operating system that operates the virtual drives in a data redundant configuration that collectively stores a data set for the cluster. Each passive virtual server, when activated, is coupled to a sufficient number of the virtual drives with redundant information to recover the data set for the cluster. The interlink is operatively configured to detect failure of the active server and to initiate promotion of a virtual server to active status to resume handling the cluster load after failover.