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. 15, 2015
Filed:
Jun. 18, 2012
Kazue Jindo, Odawara, JP;
Hidetoshi Sakaki, Odawara, JP;
Junichi Muto, Odawara, JP;
Shinichi Hiramatsu, Odawara, JP;
Jun Miyashita, Odawara, JP;
Kazue Jindo, Odawara, JP;
Hidetoshi Sakaki, Odawara, JP;
Junichi Muto, Odawara, JP;
Shinichi Hiramatsu, Odawara, JP;
Jun Miyashita, Odawara, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
The present invention continues host access and holds data of a migration source volume as the latest data even when a fault occurs in any of a plurality of access paths. Upon receiving a first write command from a host computer via a first access path, the migration source controller writes first update data to the migration source volume and, upon receiving a second write command from the host computer via a second access path, the migration destination controller transfers second update data to the migration source controller via a storage path and, upon receiving the second update data from the migration destination controller, the migration source controller writes the second update data to the migration source volume.