STORAGE DEVICE, METHOD AND NON-VOLATILE MEMORY DEVICE PERFORMING GARBAGE COLLECTION USING ESTIMATED NUMBER OF VALID PAGES

摘要

A method of operating a storage device including a memory controller and a non-volatile memory device storing data in memory blocks. The method comprises estimating a valid page count (VPC) for each of the memory blocks using a neural network model trained based on the VPC for each of the memory blocks, selecting a victim block from the memory blocks based on an estimated VPC for each of the memory blocks, and performing garbage collection on the victim block.