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:
Feb. 19, 2013
Filed:
Apr. 27, 2012
Lawrence Y. Chiu, San Jose, CA (US);
Clement L. Dickey, San Jose, CA (US);
Yu-cheng Hsu, Tucson, AZ (US);
Joseph S. Hyde, Ii, Tucson, AZ (US);
Paul H. Muench, San Jose, CA (US);
Cheng-chung Song, Tucson, AZ (US);
Lawrence Y. Chiu, San Jose, CA (US);
Clement L. Dickey, San Jose, CA (US);
Yu-Cheng Hsu, Tucson, AZ (US);
Joseph S. Hyde, II, Tucson, AZ (US);
Paul H. Muench, San Jose, CA (US);
Cheng-Chung Song, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Input/output (I/O) activity in the multiple tier storage system is monitored to collect statistical information. The statistical information is recurrently transformed into an exponential moving average (EMA) of the I/O activity having a predefined smoothing factor. Data portions in the multiple tier storage system are sorted into buckets of varying temperatures corresponding to the EMA. At least one data migration plan is recurrently generated for matching the sorted data portions to at least one of an available plurality of storage device classes. One data portion sorted into a higher temperature bucket is matched with a higher performance storage device class of the available plurality of storage device classes than another data portion sorted into a lower temperature bucket.