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:
Jan. 07, 2014
Filed:
Jun. 15, 2011
Takamasa Sato, Odawara, JP;
Katsuhiro Okumoto, Odawara, JP;
Takamasa Sato, Odawara, JP;
Katsuhiro Okumoto, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In one of the storage control apparatuses in the remote copy system which performs asynchronous remote copy between the storage control apparatuses, virtual logical volumes complying with Thin Provisioning are adopted as journal volumes to which journals are written. The controller in the one of the storage control apparatuses assigns a smaller actual area based on the storage apparatus than in case of assignment to the entire area of the journal volume, and adds a journal to the assigned actual area. If a new journal cannot be added, the controller performs wraparound, that is, overwrites the oldest journal in the assigned actual area by the new journal.