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:
Mar. 31, 2009
Filed:
Jan. 13, 2006
Naoto Matsunami, Hayama, JP;
Tetsuya Shirogane, Yokohama, JP;
Akira Nishimoto, Sagamihara, JP;
Kenta Shiga, Yokohama, JP;
Naoko Iwami, Sagamihara, JP;
Naoto Matsunami, Hayama, JP;
Tetsuya Shirogane, Yokohama, JP;
Akira Nishimoto, Sagamihara, JP;
Kenta Shiga, Yokohama, JP;
Naoko Iwami, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage system comprises a plurality of storage nodes and a controller coupling unit interconnecting controllers within the storage nodes. A memory in the controller has a plurality of shared memory areas each associated with a combination of one CPU core with one logical unit controller. When a network controller of a first storage node receives a host command addressed to a logical unit of a second storage node, the CPU core of the first storage node stores the host command in the shared memory area associated with the logical unit controller of the second storage node. The logical unit controller of the second storage node acquires the stored host command in the shared memory area via the controller coupling unit.