公开(公告)号：US11513971B2

公开(公告)日：2022-11-29

申请号：US17101014

申请日：2020-11-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Keonsoo Ha ,  Minseok Ko ,  Hyunjoo Maeng ,  Jihyung Park

IPC: G06F11/20 ,  G06F12/1018 ,  G06F12/02

Abstract: An address mapping method of a storage device which includes a plurality of sub-storage devices each including an over-provision area includes detecting mapping information of a received logical address from a mapping table, selecting a hash function corresponding to the received logical address depending on the mapping information, selecting any one, which is to be mapped onto the received logical address, of the plurality of sub-storage devices by using the selected hash function, and mapping the received logical address onto the over-provision area of the selected sub-storage device. The selected hash function is selected from a default hash function and a plurality of hash functions to provide a rule for selecting the any one of the plurality of sub-storage devices.