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:
Jul. 31, 2012
Filed:
Nov. 05, 2009
Thomas William Bish, Tucson, AZ (US);
Katsuyoshi Katori, Kanagawa, JP;
David Michael Morton, Tucson, AZ (US);
Yun Mou, Tucson, AZ (US);
Jonathan Wayne Peake, Tucson, AZ (US);
Joseph M Swingler, Tucson, AZ (US);
Thomas William Bish, Tucson, AZ (US);
Katsuyoshi Katori, Kanagawa, JP;
David Michael Morton, Tucson, AZ (US);
Yun Mou, Tucson, AZ (US);
Jonathan Wayne Peake, Tucson, AZ (US);
Joseph M Swingler, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A hybrid data storage system is one which has data storage clusters of different types. In a hybrid data storage system, at least one first data storage cluster is configured to store data and has high data storage capacity; and at least one second data storage cluster is configured to store data and has lower data storage capacity than the first cluster. The data is initially replicated and stored by at least one first and at least one second data storage cluster. The method identifies a portion of the stored initially replicated data of at least one second data storage cluster as 'pinned'; continues to store the pinned initially replicated data; and selectively removes non-pinned initially replicated data from the second data storage cluster(s) to account for the capacity difference.