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. 12, 2008
Filed:
Jul. 15, 2005
Naoko Ikegaya, Sagamihara, JP;
Katsuhisa Miyata, Yokohama, JP;
Masaaki Hosouchi, Zama, JP;
Masahide Sato, Noda, JP;
Naoko Ikegaya, Sagamihara, JP;
Katsuhisa Miyata, Yokohama, JP;
Masaaki Hosouchi, Zama, JP;
Masahide Sato, Noda, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The data processing system comprises at least one first storage system, and at least one second storage system connected to the first storage system. The second storage system receives change information identifying pre-change and post-change copy destination storage areas in a change process for changing a copy destination storage area of a target copy pair to another storage area of the second storage system; transmits the change information to the first storage system that has a copy source storage area in the target copy pair; and transmits copy information for the purpose of copying data between the pre-change and post-change copy destination storage areas. The first storage system refers to pair information identifying the copy pair, and transmits a copy of the data stored in a copy source storage area to the second storage system that has a copy destination storage area. The first storage system updates the pair information according to the change information received from the second storage system.