Samsung Electronics Co., Ltd.

In Hwan Doh

Chul Ju Lee

Heewon Lee

Sangkwon Moon

Nam Wook Kang

Seung-Yeon Lee

NamWook Kang

Jong Won Lee

Yang Woo Roh

Se Jeong Jang

In Hae Kang

Chanik Park

Jooyoung Hwang

Sil Wan Chang

Joo Young Hwang

Seontaek Kim

Min Seok Ko

Dae Ok Kim

Jupyung Lee

Heechul Chae

Yu-Hun Jun

Bum Hoe Koo

Kumar Satish

Jae Yoon Choi

An open channel solid state drive includes a flash memory including a first block and a controller which controls the flash memory, the controller receiving write data and a physical address of the first block from a host and attempting a write of the data in the first block. The controller generates first data which is not written in the first block among the write data when a power-off occurs during writing attempt. The write data includes the first data and second data already written in the first block. The controller determines whether successive writing of the first data in the first block is possible or impossible. If the successive writing is possible, the controller successively writes the data in the first block. If the successive writing is impossible, the host or the controller writes the first data and the second data in a second block of the flash memory.

Open channel solid state drive, nonvolatile memory system including the same and method of power loss protection of open channel solid state drive

A solid state drive includes: a plurality of non-volatile memories, each of the non-volatile memories connected to a channel, the channel connected to at least one way connected to a die; a host interface which receives stream data and stream information from a host; and a resource allocator which allocates the stream data to super blocks of the plurality of non-volatile memories on the basis of the stream information. A super block includes a unit super block, and the unit super block includes a block of a first die corresponding to a first channel and connected to a plurality of the ways connected to the first channel. The stream data may include stream groups, and the stream information may include the number of streams included in a stream group. A performance factor of a stream or stream group an extent size of a stream, and an allocation position of the stream, may also be included in the stream information.

Solid state drive that allocates stream data to super blocks based on stream information and a memory allocation method thereof

An operation method of a memory controller which is configured to control a nonvolatile memory device includes receiving a command from the outside, calculating a delay time based on a currently available write buffer, a previously available write buffer, and a reference value, and processing the command based on the delay time.

Operation method of memory controller and operation method of storage device including the same

A method of operating a data storage device includes programming non-fully programmed memory blocks at a point in time when a reference time elapses from a point in time when each of the memory blocks is physically erased, acquiring a first interval and a second interval, calculating a disturb index based on the first interval and the second interval, selecting a victim block for garbage collection based on the disturb index, and copying valid page data of the victim block into a free block. The first interval is defined by a point in time when each of the memory blocks is physically erased and a point in time when each of the memory blocks is fully programmed. The second interval is an interval during which a fully programmed state is maintained after a point in time when each of the memory blocks is fully programmed.

Data storage device including nonvolatile memory device and operating method thereof

A storage device includes a memory device; and a controller configured to fetch a command from a host, the command indicating a logical address, process the command based on the logical address, and receive, from a first replica storage device, an acknowledgment signal indicating that the command has been processed by the first replica storage device.

Storage device communicating with host according to multicast communication protocol and communication method of host

A method of operating a memory controller which controls a non-volatile memory including a plurality of blocks is provided. The method includes determining an operation count for a first block among the plurality of blocks and avoiding successive wear-leveling on the first block based on the determined operation count thereof.

Wear leveling using multiple activity counters

A method of operating a storage device includes; counting a number of fast cycles for the memory block when a program interval between two successive program operations directed to memory cells of the memory block is less than a minimal program interval, and/or when an erase interval between two successive erase operations directed to the memory block is less than a minimal erase interval, and selecting the memory block to be erased by an erase operation or selecting memory cells of the memory block to be programmed by a program operation in response to the counted number of fast cycles for the memory block.

Storage device, nonvolatile memory and method operating same

A storage device includes a nonvolatile memory and a memory controller. The memory controller is configured to receive a first program request from an external host device and program first memory cells of a memory block according to the first program request. The memory controller is further configured to program second memory cells of the memory block without a request of the external host device if a second program request is not received from the external host device for a critical time.

Storage device and operating method of the same

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Seoul, South Korea

In Hwan Doh