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:
Aug. 01, 2006
Filed:
Oct. 30, 2002
Ismail Dalgic, Sunnyvale, CA (US);
Robert Eugene Gilligan, Burlingame, CA (US);
F. Alan Jones, Menlo Park, CA (US);
Kadir Ozdemir, San Jose, CA (US);
Ismail Dalgic, Sunnyvale, CA (US);
Robert Eugene Gilligan, Burlingame, CA (US);
F. Alan Jones, Menlo Park, CA (US);
Kadir Ozdemir, San Jose, CA (US);
Intransa, Inc., San Jose, CA (US);
Abstract
Method and apparatus for migrating a volume and a virtual disk from a first storage controller to a second storage controller in a distributed storage system having volumes and virtual disks associated with storage controllers. In one embodiment, the virtual disk is migrated to the second storage controller, and requests for data reads/writes associated with the virtual disk are routed to the second controller. Further, in another embodiment, the volume is migrated to the second storage controller, and requests for data reads/writes associated with the volume are routed to the second controller. A contact address may be associated with a plurality of storage controllers and once a session between an application server and a volume is established, the application server may be redirected so as to communicate with the storage controller associated with the volume using the IP address of the storage controller. In this manner, the volumes and the virtual disks may be migrated, independently if desired, to other storage controllers in the network without disrupting the data flow between the application server and the storage controllers.