Title:
INFORMATION PROCESSING DEVICE AND DATA SHREDDING METHOD FOR AVOIDING MULTIPLE SHREDDING OF A SAME DATA BLOCK
Document Type and Number:
WIPO Patent Application WO/2011/125132
Kind Code:
A1
Abstract:
An object is to enable efficient shredding of recording media in association with migration. An information processing device (a server device 3) receives a data input/output request in a unit of a file transmitted from a client device 2, and performs writing and reading of data to and from a storage system 10 having a recording medium (hard disk drive 171) in which a file entity specified in the received data input/output request is stored in units of data blocks. The information processing device is communicatively coupled to a different storage device which is a migration destination of data. In the case where after the migration of certain data, different data is written in a data block of the certain data in an overlapped manner, the data block is not shredded if the data block is already shredded related to either of the overlapped certain and the different data after the migration.
Inventors:
SAIKA NOBUYUKI (JP)
Application Number:
PCT/JP2010/002601
Publication Date:
October 13, 2011
Filing Date:
April 09, 2010
Export Citation:
Assignee:
HITACHI LTD (JP)
SAIKA NOBUYUKI (JP)
SAIKA NOBUYUKI (JP)
International Classes:
G06F3/06
Foreign References:
| US20090182930A1 | 2009-07-16 | |||
| US20080010326A1 | 2008-01-10 | |||
| US20060117136A1 | 2006-06-01 | |||
| EP2141616A1 | 2010-01-06 | |||
| JP2009064160A | 2009-03-26 |
Attorney, Agent or Firm:
ISSHIKI & CO. (12-7 Shinbashi 2-chome, Minato-k, Tokyo 04, JP)
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Claims:
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