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. 10, 2010
Filed:
Jun. 28, 2007
Gregory T. Kishi, Oro Valley, AZ (US);
Thirumale N. Niranjan, Bangalore, IN;
Jonathan W. Peake, Tucson, AZ (US);
Mark A. Reid, Castle Way, AZ (US);
Joseph M. Swingler, Tucson, AZ (US);
Gregory T. Kishi, Oro Valley, AZ (US);
Thirumale N. Niranjan, Bangalore, IN;
Jonathan W. Peake, Tucson, AZ (US);
Mark A. Reid, Castle Way, AZ (US);
Joseph M. Swingler, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus, system, and method are disclosed for selecting a source cluster in a distributed storage configuration. A measurement module measures system factors for a plurality of clusters over a plurality of instances. The clusters are in communication over a network and each cluster comprises at least one tape volume cache. A smoothing module applies a smoothing function to the system factors, wherein recent instances have higher weights. A lifespan module calculates a mount-to-dismount lifespan for each cluster from the smoothed system factors. A selection module selects a source cluster for accessing an instance of a specified volume in response to the mount-to-dismount lifespans and a user policy.