Invention Grant
- Patent Title: Extending flash storage lifespan and data quality with data retention protection
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Application No.: US15452263Application Date: 2017-03-07
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Publication No.: US10650885B2Publication Date: 2020-05-12
- Inventor: Shu Li
- Applicant: Alibaba Group Holding Limited
- Applicant Address: KY
- Assignee: Alibaba Group Holding Limited
- Current Assignee: Alibaba Group Holding Limited
- Current Assignee Address: KY
- Agency: Van Pelt, Yi & James LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G11C11/56 ; G11C16/34 ; G11C16/04 ; G11C16/32

Abstract:
One technique for extending flash storage lifespan and data quality with data retention protection includes: determining whether page data included in a page in a solid state drive (SSD) has been copied to another storage; in the event that the page data has not been copied to the other storage: determining whether the page data is to be refreshed; and in the event that the page data is determined to be refreshed, refreshing at least the page data. Another technique includes determining whether a number of times a page has been read exceeds a read threshold, or an amount of time since the page was written exceeds a retention threshold.
Public/Granted literature
- US20180260134A1 EXTENDING FLASH STORAGE LIFESPAN AND DATA QUALITY WITH DATA RETENTION PROTECTION Public/Granted day:2018-09-13
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