Efficient data storage usage associated with ungraceful shutdown
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United States of America Patent
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Aug 16, 2022
Grant Date -
N/A
app pub date -
Feb 24, 2021
filing date -
Oct 28, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
The present disclosure generally relates to efficient block usage after ungraceful shutdown (UGSD) events. After a UGSD event, a host device is alerted by the data storage device that a QLC block that was being used prior to the UGSD event is experiencing an ongoing block recovery and that the block is not yet available to accept new data. The block is then checked to determine whether the block can continue to be used for the programming that was occurring at the time of the UGSD event. Once a determination is made, the data storage device notifies the host device so that normal operations may continue. Additionally, the amount of free blocks available for programming is monitored during UGSD events so that the host device can be warned if a power loss halt is triggered.
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