Controller, flash memory apparatus, method for identifying data block stability, and method for storing data in flash memory apparatus
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United States of America Patent
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Sep 26, 2017
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app pub date -
Mar 30, 2016
filing date -
Dec 5, 2014
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Abstract
In a method for controlling data stored in an Solid State Disk (SSD) of a data de-duplication system, a storage controller obtains stability information of a data block. The stability information comprises a reference count of the data block and a length of a period of time when the data block is stored in the SSD. The storage controller identifies a stability level of the data block according to the stability information, and sends the stability level of the data block to the SSD. The SSD moves the data block to a target block which corresponds to the stability level. Thereby, the SSD can store data blocks having a same stability level together.
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