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:
Jul. 01, 2008
Filed:
Oct. 06, 2005
Toshiyuki Ukai, Machida, JP;
Yoshifumi Takamoto, Kokubunji, JP;
Masaaki Shimizu, Mitaka, JP;
Yoshiko Yasuda, Tokorozawa, JP;
Toshiyuki Ukai, Machida, JP;
Yoshifumi Takamoto, Kokubunji, JP;
Masaaki Shimizu, Mitaka, JP;
Yoshiko Yasuda, Tokorozawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A technology capable of achieving the LU migration in terms of a file system and a logical volume and the effective migration in a host computer which provides a file system function and a logical volume function is provided. A computer system has I/O access unification and management means that obtains RAID configuration information and RAID statistical information in a disk array system and manages an I/O access unified management table in which file system configuration information and logical volume configuration information managed by an OS are unified. Also, the computer system has migration volume deciding means that determines a migration method based on the I/O access unified management table, migration influence predicting means that obtains migration influence prediction information, and RAID linkage migration performing means.