FILE MANAGEMENT SUB-SYSTEM AND FILE MIGRATION CONTROL METHOD IN HIERARCHICAL FILE SYSTEM

Title:

FILE MANAGEMENT SUB-SYSTEM AND FILE MIGRATION CONTROL METHOD IN HIERARCHICAL FILE SYSTEM

Document Type and Number:

WIPO Patent Application WO/2011/055412

Kind Code:

A1

Abstract:

A file management sub-system executes file migration without causing an unintended drop in the response time or the like. When a management computer issues a file migration direction, a file storage apparatus notifies client computer associated with a migration target file that file migration is scheduled. When postponement or suspension of file migration is requested by the client computer, the file migration is postponed or suspended.

Inventors:

FUKATANI TAKAYUKI (JP)
KAMEI HITOSHI (JP)
NAKANO TAKAHIRO (JP)

Application Number:

PCT/JP2009/005912

Publication Date:

May 12, 2011

Filing Date:

November 06, 2009

Export Citation:

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Assignee:

HITACHI LTD (JP)
FUKATANI TAKAYUKI (JP)
KAMEI HITOSHI (JP)
NAKANO TAKAHIRO (JP)

International Classes:

G06F17/30

Domestic Patent References:

WO2004025404A2

2004-03-25

Foreign References:

US5873103A	1999-02-16
US20050240636A1	2005-10-27
US20080222158A1	2008-09-11
EP1840723A2	2007-10-03