公开(公告)号：US20190199520A1

公开(公告)日：2019-06-27

申请号：US16030087

申请日：2018-07-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： SEOKHWAN KIM ,  Jun-ho JANG ,  Seongjun AHN

IPC: H04L9/08 ,  G06F7/58 ,  G06F17/30

CPC classification number: H04L9/088 ,  G06F7/588 ,  G06F16/164

Abstract: A storage system includes a host device and a storage device. The host device generates a file, and generates a unique file identifier (UFID) for each file, wherein the UFID is based on an identifier of the generated file and at least one logical address corresponding to the generated file. The storage device generates a key for encrypting or decrypting write data corresponding to the generated file based on the UFID and a random number, and encrypts the write data by using the key.

公开(公告)号：US20210103388A1

公开(公告)日：2021-04-08

申请号：US16834779

申请日：2020-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JAEYOON CHOI ,  SEOKHWAN KIM ,  SUMAN PRAKASH BALAKRISHNAN ,  DONGJIN KIM ,  CHANSOL KIM ,  EUNHEE RHO ,  HYEJEONG JANG ,  WALTER JUN

IPC: G06F3/06 ,  G06F11/10 ,  G06F11/14

Abstract: A storage system communicates with a host system and includes a storage device including storage medium divided into a plurality of blocks including high reliability blocks and reserve blocks, and a controller. The controller provides the host system with block information identifying the high reliability blocks among the plurality of blocks, receives a block allocation request from the host system, wherein the block allocation request is defined with reference to the block information and identifies at least one high reliability block to be used to store metadata, and allocates at least one high reliability block to a meta region in response to the block allocation request. The controller includes a bad block manager that manages an allocation operation performed in response to the block allocation request, and a repair module that repairs an error in metadata stored in one of the high reliability blocks.