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. 20, 2009
Filed:
May. 12, 2006
Hiromi Matsushige, Hiratsuka, JP;
Hiroshi Suzuki, Sagamihara, JP;
Masato Ogawa, Chigasaki, JP;
Tomokazu Yokoyama, Fujisawa, JP;
Yasuhiro Sakakibara, Odawara, JP;
Hiromi Matsushige, Hiratsuka, JP;
Hiroshi Suzuki, Sagamihara, JP;
Masato Ogawa, Chigasaki, JP;
Tomokazu Yokoyama, Fujisawa, JP;
Yasuhiro Sakakibara, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention relates to a storage unit comprising: a channel control portion for receiving a data input/output request; a cache memory for storing data; a disk control portion for performing input/output processing on data in accordance with the data input/output request; and a plurality of disk drives for storing data, wherein at least two of the disk drives input data to and output it from the disk control portion at different communication speeds. Further, the storage unit has a plurality of communication paths provided to connect at least one of the disk drives in such a manner as to constitute a loop defined by the FC-AL fiber channel standards, so that the communication speeds can be set differently for these different communication paths.