公开(公告)号：US20210103394A1

公开(公告)日：2021-04-08

申请号：US16857953

申请日：2020-04-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eunhee RHO ,  Suman Prakash BALAKRISHNAN ,  Dongjin KIM ,  Seokhwan KIM ,  Chansol KIM ,  Jaeyoon CHOI ,  Hyejeong JANG

IPC: G06F3/06

Abstract: A host system configured to communicate with a storage system, including a host flash translation layer (FTL) configured to manage a plurality of blocks included in the storage system, wherein the host FTL includes a block assignment module configured to generate priority information indicating priorities of free blocks from among the plurality of blocks based on erase count values of the free blocks, and wherein the host FTL is configured to assign a free block having a lowest erase count value, from among the free blocks, for a data write operation based on the priority information; a counting circuit configured to count a number of erase operations performed on each of the plurality of blocks; and an interface circuit configured to transmit to the storage system a block address along with an access request to the storage system, the block address indicating a position of the assigned free block.

公开(公告)号：US20210103517A1

公开(公告)日：2021-04-08

申请号：US16858959

申请日：2020-04-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongjin KIM ,  Suman Prakash BALAKRISHNAN ,  Seokhwan KIM ,  Chansol KIM ,  Eunhee RHO ,  Jaeyoon CHOI ,  Hyejeong JANG

IPC: G06F12/02 ,  G06F3/06 ,  G06F11/10 ,  G11C29/52

Abstract: A method of operating a memory system including a memory device, including in response to a write request of a host, storing write data and a physical address received from the host in a buffer; performing a write operation on the memory device based on the write data and the physical address; based on a write error corresponding to the write data occurring, asynchronously providing the host with error occurrence information; and providing the host with the write data having the write error and information used for a recovery from the write error.

公开(公告)号：US20230266896A1

公开(公告)日：2023-08-24

申请号：US18170354

申请日：2023-02-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eunhee RHO ,  Seokhwan Kim ,  Yonggil Song

IPC: G06F3/06

CPC classification number: G06F3/0631 ,  G06F3/0623 ,  G06F3/064 ,  G06F3/0679

Abstract: A memory system may include a host system configured to split at least one data stream into a plurality of split data streams, grouping at least one unmergeable first data stream among the plurality of split data streams, and merging at least one mergeable second data stream among the plurality of split data streams, a storage device comprising one or more flash memory devices, the storage device including at least one first region and at least one second region, and processing circuitry configured to, receive at least one request to allocate at least one storage region for the tailored at least one data stream from the host system, store data blocks associated with the at least one first data stream in the first region, and store data blocks associated with the at least one second data stream in the second region.

公开(公告)号：US20230244402A1

公开(公告)日：2023-08-03

申请号：US17946239

申请日：2022-09-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eunhee RHO ,  Seokhwan KIM

IPC: G06F3/06

CPC classification number: G06F3/065 ,  G06F3/0644 ,  G06F3/0604 ,  G06F3/0679

Abstract: Disclosed is a storage device which includes a nonvolatile memory device, and a controller configured to partition a storage space of the nonvolatile memory device into zones and access the storage space. Each zone corresponds to consecutive physical addresses of the nonvolatile memory device, and the controller is configured to map the consecutive physical addresses of each zone onto consecutive logical addresses. In response to a copy command being received from an external host device, the controller is configured to start a copy operation for copying data of a first zone of the zones to a second zone of the zones and send first read commands and first write commands to the nonvolatile memory device. In response to a suspend command, the controller is configured to suspend the copy operation, store progress status information about the copy operation, and send a suspend response to the external host device.