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:
Oct. 29, 2013
Filed:
Jun. 30, 2011
Eiji Sambe, Odawara, JP;
Nobuyuki Saika, Yokosuka, JP;
Xiaolin Wang, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention concerns allocating files in storage apparatuses efficiently while satisfying requirements of the files. An information systemincludes a first server systemcoupled to a first storage apparatus, a second server systemcoupled to a second storage apparatus, and a third server systemcoupled to a third storage apparatus. When the first server systemreceives a data I/O not needing access to the entity of a file responds to the data I/O request using metadata of the file and when the first server systemreceives a data I/O needing access to the entity of a file acquires the entity of the file from the second storage apparatusor the third storage apparatusto process the data I/O request. The first server apparatus determines the allocation target of the entity of the files on the basis of a requirement set for the files and information relating to configurations of the storage apparatuses