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. 24, 2011
Filed:
Nov. 24, 2008
Shunichi Wakabayashi, Ninomiya, JP;
Kosuke Sakai, Isehara, JP;
Yusuke Nonaka, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage system includes a controller that controls switching from a system before switching to a system after switching. The controller includes a check unit that checks whether a connection between the system before switching and the system after switching is enabled, or not, a determination unit that determines whether switching from the system before switching to the system after switching is enabled, or not, a fail-over information migration unit that migrates fail-over information included in the system before switching to the system after switching, a user data migration unit that migrates user data in the system before switching to the system after switching, and a switching execution unit that enables the system after switching to receive I/O from a host.