Patent ID: 11928338
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. A method of performing wear-leveling in a storage device that includes a storage controller and a plurality of nonvolatile memory devices, each of the plurality of nonvolatile memory devices including a plurality of memory blocks, the method comprising:
periodically obtaining durability information associated with a first memory block among the plurality of memory blocks by periodically obtaining at least one cell count value associated with the first memory block; and
moving first data stored in the first memory block to a second memory block based on the durability information,
wherein periodically obtaining the durability information includes:
periodically providing, by the storage controller, a read command for the first memory block;
periodically performing a read operation on first memory cells of the first memory block based on the read command, the first memory cells connected to a first wordline, the first wordline being determined in advance of the method of performing wear-leveling in a storage device;
periodically providing, by the plurality of nonvolatile memory devices, the at least one cell count value based on a result of the read operation; and
periodically providing, by the storage controller, the durability information, the durability information being obtained by accumulating the at least one cell count value.