Patent ID: 8447944
Filing Date: 2013-05-21
Classification: G06F

Abstract:
1. An information processing device that receives a data input/output request in a unit of a file, and performs writing and reading of data to and from a storage device having a recording medium in which a file entity specified in the received data input/output request is stored in units of data blocks, the information processing device being communicatively coupled to a different storage device which is a migration destination of data included in a certain file stored in the recording medium, the information processing device comprising: a processing unit, wherein when the data included in the certain file is migrated to the different storage device, and other data included in a different file is then stored in an overlapped manner in the data blocks previously storing the migrated data, and when the information processing device receives a shredding request from the different storage device to shred the data blocks storing the different file, the processing unit determines whether the data blocks storing the different file contain a data block previously storing the data of the certain file and already shredded, and skips shredding of the data block determined as already shredded.