System and method for in-nand garbage collection

Abstract

A method and memory device for performing a garbage collection operation. The memory device includes memory planes including first and second memory planes, each memory plane including memory blocks; and a processor including a checksum calculator to calculate checksum on valid page data of at least one victim block in the first memory plane. The processor is configured to: determine whether at least one target block in the first memory plane is open or full; determine whether the checksum is less than a checksum threshold; and selectively perform one of an internal garbage collection in the first memory plane and an external garbage collection outside the first memory plane, based on the determining whether the target block is open or full and the determining whether the checksum is less than the checksum threshold.

Dependencies are inferred from the claim text.