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. 26, 2015
Filed:
Dec. 14, 2010
Nobuyuki Saika, Yokosuka, JP;
Nobuyuki Saika, Yokosuka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Services are promptly resumed at the time of a failure recovery in an information processing system. Before a first server systemresumes service during the failure recovery, a second server systemsends the first server systemdirectory images of directories of a highest-level tier to a predetermined lower-level tier out of data of files stored in a second storage apparatus, and the first server systemrestores the directory images in a first storage apparatus. When the request is transmitted from the first server system, the second server systemreads an additional directory image from the second storage apparatusand transmits the additional directory image to the first server system. If a re-stubbing occurrence frequency is equal to or higher than a predetermined threshold, the second server systemsuppresses transmission of directory images to the first server system