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. 09, 2007
Filed:
Nov. 26, 2003
Haruaki Watanabe, Sagamihara, JP;
Kouji Arai, Odawara, JP;
Katsunori Nakamura, Odawara, JP;
Takashi Oeda, Sagamihara, JP;
Akira Yamamoto, Sagamihara, JP;
Kenji Yamagami, Sagamihara, JP;
Haruaki Watanabe, Sagamihara, JP;
Kouji Arai, Odawara, JP;
Katsunori Nakamura, Odawara, JP;
Takashi Oeda, Sagamihara, JP;
Akira Yamamoto, Sagamihara, JP;
Kenji Yamagami, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a storage system, a logical volume is divided into a plurality of small areas called logical storage devices and only such an area designated by a user is made an object of remote copying or migratory copying. Also, there is provided a unit for forming a logical volume from any logical storage device of any RAID group. Thereby, the reduction of the deterioration in performance at the time of remote copying, the reduction of a storage area to be assigned to a secondary site as a copy destination, the shortening of a time required for migratory copying and the assignment of any area of a logical volume on any RAID group are enabled.