Page-level health equalization
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United States of America Patent
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Jun 5, 2018
Issued Date -
N/A
app pub date -
Dec 23, 2014
filing date -
Dec 23, 2014
priority date (Note) -
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Abstract
According to one embodiment, a method includes assigning a subset of physical pages within a block of non-volatile memory to a pseudo-physical block, wherein a number of pages in the pseudo-physical block is less than a number of physical pages within the non-volatile memory block, and reassigning physical pages within the block of non-volatile memory to the pseudo-physical block upon occurrence of an event. The assigning includes: determining a health metric for each of the physical pages within the block of non-volatile memory, and selecting a subset of the physical pages for assignment to the pseudo-physical block based on the health metric. Moreover, the subset of pages has a fixed size for at least a number of reassignments.
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