Soft error detection and correction for data storage devices

Abstract

The present disclosure generally relates to soft error detection and correction for data storage devices. Various embodiments described herein relate to systems and methods for detecting soft errors, including, but not limited to, reading a codeword from a non-volatile memory; decoding the codeword to obtain at least input data; determining validity of the input data using a first signature after processing the input data over a data path; and sending the input data to a host in response to determining that the input data is valid using the first signature.

Description

technical field [0001] The present disclosure generally relates to systems, methods, and non-transitory processor-readable media for detecting and correcting soft errors in data storage devices. Background technique [0002] In solid state drives (SSDs), hard errors can occur in non-volatile memory devices such as NAND flash memory devices. Examples of hard errors include, but are not limited to, programming errors, errors caused by reading with non-optimal thresholds, errors caused by dwell / read disturb stress, and the like. To address such hard errors, a controller of an SSD, such as an error correcting code (ECC) encoder, may use one or more error correcting codes (ECC) to encode data programmed to the non-volatile memory device. A controller, such as an ECC decoder, can decode encoded data read from the non-volatile memory device to correct hard errors. [0003] Soft errors, on the other hand, are errors that can occur in components of SSDs other than volatile memory d...

AI Technical Summary

Problems solved by technology

Although soft errors occur less frequently than hard errors, system reliability can be affected by soft errors

For example, soft errors can affect the SSD's controller, causing the device to freeze, jam, or even corrupt data

Images