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. 27, 2013
Filed:
Aug. 29, 2011
Paresh Chatterjee, Fremont, CA (US);
Anandh Mahalingam, Fremont, CA (US);
Narayanan Balakrishnan, Chennai, IN;
Srikumar Subramanian, Newark, CA (US);
Paresh Chatterjee, Fremont, CA (US);
Anandh Mahalingam, Fremont, CA (US);
Narayanan Balakrishnan, Chennai, IN;
Srikumar Subramanian, Newark, CA (US);
American Megatrends, Inc., Norcross, GA (US);
Abstract
A method, system, apparatus, and computer-readable medium are described for the background movement of data between nodes in a storage cluster. According to one method, exception tables are generated that include data identifying the areas on each node that need to be migrated to another node and the areas on each node that are to be migrated from another node. The exception tables may be generated in response to the failure of a node in the storage cluster or in other circumstances. A background resynchronization thread utilizes the contents of the exception tables to migrate data between the nodes of the cluster, thereby synchronizing the data stored on the nodes. Input/output operations directed to an area that is to be migrated from another node are redirected to the other node in accordance with a timeout period associated with the input/output operations.