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:
Aug. 30, 2005
Filed:
Aug. 06, 2003
Akira Yamamoto, Sagamihara, JP;
Takao Satoh, Sagamihara, JP;
Shigeo Honma, Odawara, JP;
Yoshihiro Asaka, Hiratsuka, JP;
Yoshiaki Kuwahara, Odawara, JP;
Hiroyuki Kitajima, Yokohama, JP;
Akira Yamamoto, Sagamihara, JP;
Takao Satoh, Sagamihara, JP;
Shigeo Honma, Odawara, JP;
Yoshihiro Asaka, Hiratsuka, JP;
Yoshiaki Kuwahara, Odawara, JP;
Hiroyuki Kitajima, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A disk storage system has a control unit having a plurality of external ports connectable to a mirrored disk including two disks to which write data is written. When the control unit receives two read requests issued from a processor to the disk unit group, a first read operation is performed to read data requested by the first read request from one of the disks and a second read operation is performed to read data requested by the second read request from the other one of the disks. Also, a first transferring operation is performed to transfer data read by the first read operation to one external port of the control unit and a second transferring operation is performed to transfer data read by the second read operation to another external port of the control unit. Further, the data read by the two read operations is transferred to the processor via the external ports.