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:
Apr. 28, 2015
Filed:
Jun. 30, 2011
Daisuke Tanaka, Odawara, JP;
Keishi Tamura, Fujisawa, JP;
Daisuke Tanaka, Odawara, JP;
Keishi Tamura, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A computer system and an access restriction method may be used to enable security and improve reliability. The computer system includes a first storage apparatus and a second storage apparatus. The first storage apparatus provides a first logical volume from/to which a host apparatus reads and writes data, and the second storage apparatus provides a virtual second logical volume obtained by virtualizing the first logical volume of the first storage apparatus to the host apparatus. The first path information relates to a path from the host apparatus to the second logical volume registered in the first storage apparatus in association with the first logical volume of the first storage apparatus. Reservation of and access to the first logical volume is granted only for a reservation request and access request with matching path information from the host apparatus.