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:
Aug. 02, 2011
Filed:
Dec. 05, 2008
Norifumi Nishikawa, Machida, JP;
Takashi Oeda, Sagamihara, JP;
Nobuo Kawamura, Atsugi, JP;
Kazuhiko Mogi, Sagamihara, JP;
Norifumi Nishikawa, Machida, JP;
Takashi Oeda, Sagamihara, JP;
Nobuo Kawamura, Atsugi, JP;
Kazuhiko Mogi, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A database recovery method including a computer and a storage system, in which: the storage system includes a disk drive for storing data; the disk drive includes a data volume, a snapshot volume, a database log for storing an update log, and an update journal for storing update information of the data volume; a recovery point for indicating an end point of a range to which the update journal is to be applied and a starting point of a range to which the database log is to be applied is recorded to recover the data volume; and when the database is to be recovered, the update journal is applied to the snapshot volume up to the recovery point, the snapshot volume after the update is switched to the data volume, and the database log after the recovery point is applied to the data volume that is set by switching.