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:
Mar. 06, 2012
Filed:
May. 11, 2006
Applicant:
Manabu Kitamura, Kanagawa, JP;
Inventor:
Manabu Kitamura, Kanagawa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/00 (2006.01); G06F 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Data is migrated from a first CAS (contents addressed storage) system to a second CAS system. When the migration process is started, the second CAS system retrieves a list of the objects stored on the first CAS system. The second CAS system, based on the list, retrieves each object from the first CAS system, calculates an object ID for each object, and stores each object and the calculated object ID into the storage devices in the second CAS system. Methods for reducing downtime during the migration process are also disclosed.