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:
Dec. 26, 2006
Filed:
Jan. 13, 2004
Method of controlling storage device controlling apparatus, and storage device controlling apparatus
Yutaka Takata, Kanagawa, JP;
Shinichi Nakayama, Kanagawa, JP;
Hiroshi Ogasawara, Kanagawa, JP;
Jinichi Shikawa, Chiba, JP;
Nobuyuki Saika, Kanagawa, JP;
Yutaka Takata, Kanagawa, JP;
Shinichi Nakayama, Kanagawa, JP;
Hiroshi Ogasawara, Kanagawa, JP;
Jinichi Shikawa, Chiba, JP;
Nobuyuki Saika, Kanagawa, JP;
Hitachi, Ltd., , JP;
Abstract
A storage device controlling apparatus includes: a plurality of channel controllers having a circuit board on which are formed a file access processing section receiving requests to input and output data in files as units from an information processing apparatus and an I/O processor outputting I/O requests corresponding to the requests to input and output data to a storage device; and a disk controller executing input and output of data into and from the storage device in response to the I/O requests sent from the I/O processors. In the storage device controlling apparatus, the disk controller performs a replication management processing whereby data is also written into a second logical volume to store a copy of the data in the second logical volume, when the data is written into a first logical volume.