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:
Dec. 09, 2008
Filed:
Oct. 24, 2005
Applicants:
Ikuo Uratani, Kaisei, JP;
Kiichiro Urabe, Isehara, JP;
Inventors:
Ikuo Uratani, Kaisei, JP;
Kiichiro Urabe, Isehara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a storage system having a host system, a first storage controller and a second storage controller. The first storage controller has a primary logical volume formed from an actual volume, and a secondary logical volume formed from a virtual volume capable of forming a copy pair with the primary logical volume. The second storage controller has an external volume formed from an actual volume to be mapped to the secondary logical volume. The host system has device data showing the mapping relationship between the external volume and the secondary logical volume.