Title:
記憶制御装置、記憶装置、及びデータ移動制御方法
Document Type and Number:
Japanese Patent JP4910064
Kind Code:
B2
Abstract:
According to one embodiment, a storage controller includes a condition storage, a determination module, a wear-leveling block retainer, and a data transfer controller. The condition storage is provided in a storage including a plurality of blocks, and stores block condition information including at least one of erasure time information indicating when data is erased last time and erasure count information indicating the number of times data is erased. The determination module determines whether there is a block that requires wear leveling based on the block condition information. The wear-leveling block retainer retains block identification information that identifies a block determined to require wear leveling. The data transfer controller performs compaction to transfer data stored in blocks of the storage for collecting the data in a block, and, when the block identification information is retained, transfers data stored in the block identified by the block identification information.
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Inventors:
Masuo Yoko
Miyamoto Hironobu
Okamoto Wataru
Miyamoto Hironobu
Okamoto Wataru
Application Number:
JP2010194040A
Publication Date:
April 04, 2012
Filing Date:
August 31, 2010
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G06F12/16; G06F3/08
Domestic Patent References:
| JP2009282989A | ||||
| JP2005275722A | ||||
| JP11003287A |
Attorney, Agent or Firm:
Hiroaki Sakai
Miyata Hideki
Miyata Hideki