公开(公告)号：US10884921B2

公开(公告)日：2021-01-05

申请号：US16146339

申请日：2018-09-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： In-Tae Hwang ,  Ju-Young Lee ,  Won-Jin Lim ,  Sung-Hyun Cho

IPC: G06F12/02 ,  G06F12/10

Abstract: A storage device includes at least one nonvolatile memory device including a plurality of memory blocks, the nonvolatile memory device configured to store user data and meta data in the plurality of memory blocks, and a device controller configured to control the nonvolatile memory device, to calculate a user cost corresponding to a time of memory accesses to the user data to be performed at garbage collection with respect to each of the plurality of memory blocks, to calculate a meta cost corresponding to a time of memory accesses to the meta data to be performed at the garbage collection with respect to each of the plurality of memory blocks, to select a victim block among the plurality of memory blocks based on the user cost and the meta cost, and to perform the garbage collection on the victim block.