13189402

Paragraph Number

215

In one embodiment, the adjustment module 408 does not adjust a read voltage threshold, even if the deviation module 404 determines that the read bias of a data set deviates from the known bias, a data error has occurred, a retry threshold has not been met, or the like. The adjustment module 408, in certain embodiments, may selectively adjust a read voltage threshold based on one or more risk factors associated with an adjustment to a grouping of storage cells. For example, risk factors may include an error rate for the grouping of storage cells (such as an UBER or the like), an erase cycle count for the grouping of storage cells, a storage request latency for the grouping of storage cells (such as an average, maximum, or other storage request execution latency), an age of the grouping of storage cells, a number of previous adjustments to a read voltage threshold of the grouping of storage cells, and/or other potential risk factors. In one embodiment, the adjustment module 408 may cancel or delay an adjustment to a read voltage threshold in response to one or more risk factors satisfying a risk threshold. In a further embodiment, the solid-state storage controller 104 may take further remedial action in response to one or more risk factors satisfying a risk threshold.

Added by DJM 3 2021