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:
May. 29, 2012
Filed:
Jun. 09, 2011
Masato Ogawa, Chigasaki, JP;
Tetsuya Inoue, Odawara, JP;
Tomoki Tanoue, Odawara, JP;
Masateru Kurokawa, Chigasaki, JP;
Masato Ogawa, Chigasaki, JP;
Tetsuya Inoue, Odawara, JP;
Tomoki Tanoue, Odawara, JP;
Masateru Kurokawa, Chigasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Appropriate parameters can be efficiently set for network ports included in a storage apparatus. A storage apparatus performing I/O processing on a storage drive in response to an I/O request manages a first table in which a network device (SAS controller, SAS expander) is associated with location information of the network ports, a second table in which the cable length of a network cable coupled to each of the network ports is associated with a port ID of the network port, and a relationship between the cable length of the network cable and the parameter (output amplitude, pre-emphasis) set for the network port. The storage apparatus acquires the cable length of the network cable from the second table, determines the parameters corresponding to the acquired cable length from the above relationship, and sets the determined parameter for the network port.