Samsung Electronics Co., Ltd.

Keunsan Park

Jooyoung Hwang

Jekyeom Jeon

Sunghyun Noh

Junhee Kim

Byungki Lee

Joon-Whan Bae

Gyeongmin Kim

Jinhwan Choi

Jeonguk Kang

Byung-Ki Lee

Yonghwa Lee

Sangyoon Oh

Heetak Shin

Byoung Geun Kim

Kui-Yon Mun

Seunghyun Choi

Junyeong Han

A storage device, including: a nonvolatile memory device including a plurality of memory cells; and a controller configured to: allocate a plurality of zones to a storage space of the nonvolatile memory device based on a request received from an external host device, select two or more erase units to be allocated to each of the plurality of zones based on a zone map table, fixedly and sequentially manage logical addresses of data written in the plurality of zones, wherein the nonvolatile memory device includes a plurality of memory chips, wherein each memory chip of the plurality of memory chips includes a plurality of memory blocks, wherein each memory block of the plurality of memory blocks includes at least two erase units, and wherein the controller is further configured to select at least one erase unit from the each memory block to be allocated to a zone.

Storage device including nonvolatile memory device and operating method of storage device

A storage device, including: a nonvolatile memory device including a plurality of memory cells; and a controller including an internal buffer including zone buffers, and configured to: allocate a plurality of zones to a storage space, select two or more erase units to be allocated to each zone based on a zone map table, fixedly and sequentially manage logical addresses of data written in the plurality of zones, based on reads for sequential logical addresses being requested by the external host device, read first data corresponding to the sequential logical addresses from the nonvolatile memory device, and output the first data to the external host device, and based on the reads being requested, perform a prefetch operation by reading second data corresponding to next sequential logical addresses, and storing the second data in the internal buffer, without receiving a next read request from the external host device.

Prefetching data for sequential reads in nonvolatile memory device

A storage device, including a nonvolatile memory device comprising a plurality of memory cells; and a controller configured to: allocate a plurality of zones to a storage space of the nonvolatile memory device based on a request received from an external host device, fixedly and sequentially manage logical addresses of data written in the plurality of zones, generate a first page map table corresponding to a first zone based on performing the write operation on the first zone, the first page map table comprising a logical address and a physical address of the first zone, based on the first zone being full, activate a read service, which is based on the zone map table, and based on the read service being activated, process read requests for the first zone from the external host device using the zone map table.

A processor configured to control a storage device includes at least one host write buffer generated based on device information of the storage device, and a control module configured to control the at least one host write buffer. The control module is further configured to store, in the at least one host write buffer, a plurality of write commands and merge the plurality of write commands to generate a merged write command.

Processor using host memory buffer and storage system including the processor

A storage system performing an overwrite, a host system controlling the storage system, and an operating method of the storage system, wherein the storage system includes a memory device; and a controller that receives new data and an overwrite request from the host system, wherein the overwrite request includes a first logical address for old data and a second logical address for the new data, and performs an overwrite operation by writing the new data corresponding to the second logical address to the memory device and invalidating the old data corresponding to the first logical address according to the overwrite request.

Storage system performing overwrite, host system controlling storage system, and operating method for storage system

A computing system includes a storage system configured to store data, and a host configured to compress a data block of a preset size loaded to a memory, generate a merged block of the preset size by merging a compressed block corresponding to the data block, an identifier of a node block referring the data block, and an offset indicating an index of the data block among at least one data block referred by the node block, and provide the merged block to the storage system.

Computing system including host and storage system and having increased write performance

An operation method of a storage device, which includes a nonvolatile memory device, includes receiving a first key-value (KV) command including a first key from an external host device; transmitting a first value corresponding to the first key from the nonvolatile memory device to the external host device as first user data, in response to the first KV command; receiving a second KV command including a second key, from the external host device; and performing a first administrative operation based on a second value corresponding to the second key, in response to the second KV command. The first KV command and the second KV command are KV commands of a same type.

Growing community of inventors

Hwaseong-si, South Korea

Keunsan Park