Adjustable read retry order based on decoding success trend

A data storage system, comprising:

• a non-volatile memory device;
• and
• a controller configured to cause:
• adjusting a sequence of read-level voltages based on a trend of a set of decoding success indicators that comprise at least a first decoding success indicator and a second decoding success indicator obtained from at least two recent successful decoding operations;
• executing one or more decoding operations to decode data read from a plurality of memory cells based on the sequence of read-level voltages;
• returning decoded data from one of the one or more decoding operations when the one of the one or more decoding operations is successful;
• and
• maintaining the set of decoding success indicators, based at least on a successful one of the one or more decoding operations.

A non-transitory machine-readable medium including machine-executable instructions thereon that, when executed by a processor, perform a method comprising:

• setting a sequence of read-level voltages based on a trend of a set of decoding success indicators that comprise at least a first decoding success indicator and a second decoding success indicator;
• performing one or more decoding operations to decode data read from a plurality of memory cells based on the sequence of read-level voltages;
• returning decoded data from one of the one or more decoding operations when the one of the one or more decoding operations is successful;
• and
• maintaining the set of decoding success indicators, based at least on a successful one of the one or more decoding operations.

A data storage system comprising:

• means for setting a sequence of read-level voltages using a trend of a set of decoding success indicators that comprise at least a first decoding success indicator and a second decoding success indicator obtained from at least two recent successful decoding operations;
• means for executing one or more decoding operations to decode data read from a plurality of memory cells based on the sequence of read-level voltages;
• means for providing decoded data from one of the one or more decoding operations when the one of the one or more decoding operations is successful;
• and
• means for maintaining the set of decoding success indicators, based at least on a successful one of the one or more decoding operations.