Systems and methods for performing data recovery in a memory system

Abstract

Systems and methods for performing defect detection and data recovery within a memory system are disclosed. A controller of a memory system writes data to a physical location of a memory and stores the physical location of the memory in a Flash Management Unit Tag cache ('Tag cache'). The controller identifies a data keep cache that is associated with the physical location of memory and updates an XOR sum stored in the identified data keep cache. The controller determines whether to perform a verification operation, and in response to a determination to perform the verification operation, verifies data stored at each physical location that has been stored in the Tag cache since a previous verification operation. Additionally, the controller determines whether to perform a reset operation, and in response to a determination to perform the reset operation, flushes the Tag cache and the plurality of data keep caches.