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. 15, 2011
Filed:
Sep. 24, 2008
Taiki Kono, Odawara, JP;
Taiki Kono, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides a storage device and a control method thereof which can enhance general-use property and availability of a storage system while enhancing I/O performance of the storage system as a whole. The storage device is provided with an external connection function in which a command is generated in response to a read request or a write request given by a host computer, and the generated command is issued to an external storage device via any of a plurality of ports. In such a storage device, a channel processor, for every kind of the command, issues a test command to the external storage device in a plurality of issuing methods, measures an I/O performance for every issuing method, displays a result of measurement of the I/O performance for every method, and/or sets the issuing method in issuing the command to the external storage device based on the result of measurement of the I/O performance for every issuing method.