Prediction and avoidance of SSD and firmware-based SSD block failures

摘要

PROBLEM TO BE SOLVED: To provide a method for predicting and avoiding a failure of an SSD and a firmware-based SSD block. A solid state drive (SSD) of the present invention is a controller for managing flash storage for data composed of a plurality of blocks, reading data from the flash storage, and writing data to the flash storage. And metadata storage that stores device-based log data about errors in SSDs and identification that runs on the processor and acts to identify suspicious blocks among multiple blocks in response to device-based log data. With and without firmware, the verification firmware determines if a suspicious block is expected to fail in response to both accurate block-based data and device-based log data. [Selection diagram] Fig. 1