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. 19, 2014
Filed:
Aug. 10, 2012
Paresh Chatterjee, Fremont, CA (US);
Ajit Narayanan, Fremont, CA (US);
Loganathan Ranganathan, Fremont, CA (US);
Sharon Enoch, Newark, CA (US);
Paresh Chatterjee, Fremont, CA (US);
Ajit Narayanan, Fremont, CA (US);
Loganathan Ranganathan, Fremont, CA (US);
Sharon Enoch, Newark, CA (US);
American Megatrends, Inc., Norcross, GA (US);
Abstract
Technologies are described for implementing a migration mechanism in a data storage system containing multiple tiers of storage with each tier having different cost and performance parameters. Access statistics can be collected for each territory, or storage entity, within the storage system. Data that is accessed more frequently can be migrated toward higher performance storage tiers while data that is accessed less frequently can be migrated towards lower performance storage tiers. Each tier can be associated with a range of ILM statistics referred to as the bucket for that tier. A pivot table may be provided that relates the tiers and the buckets. Operations on the pivot table can provide counts of how many territories may be promoted or demoted between any two pairs of tiers.