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:
Jun. 12, 2007
Filed:
Jun. 15, 2006
Applicants:
Koichi Okada, Odawara, JP;
Akiyori Tamura, Kaisei, JP;
Inventors:
Koichi Okada, Odawara, JP;
Akiyori Tamura, Kaisei, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/14 (2006.01); G06F 12/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Data migration can be executed between new and old disk apparatuses without changing the disk definition of a host computer. A switch having the function of online data migration is provided between the host computer and the old disk apparatus, data are copied to the new disk apparatus while the disk apparatus is accessed continuously by the host computer. If a SCSI command for identifying disk apparatuses is issued by the host computer after data migration, the response of the old disk apparatus is sent back.