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:
Sep. 09, 2008
Filed:
Oct. 29, 2004
Yoshihito Nakagawa, Ooi, JP;
Isamu Kurokawa, Odawaram, JP;
Yoshihito Nakagawa, Ooi, JP;
Isamu Kurokawa, Odawaram, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage device system in which migration of data from an existing storage device to a higher-standard storage device is unnecessary, and in which discarding of existing storage devices by the user can be prevented. A CHFreceives a Read Capacity command from a new-type storage device(S). Using LDEV, LUN and other information tables, an LUNis converted into a mapped LDEV (S). A check is performed to determine whether the LDEV emulation type is read-only, write-only, or read/write (S). If none of these, a check is performed to determine whether the emulation type is newly created (S). If newly created, the size of all storage areas of the LDEV are set as the Max LBA in a response to the new-type storage device(S). If the result of Sis YES, the size of the user area in the LDEV is set as the Max LBA in a response to the new-type storage device(S). If not newly created, processing proceeds to the processing of S