Skhynix Inc.

Jun Hee Ryu

Kwang Jin Ko

Young Pyo Joo

Chang Hyun Park

Hyung Jin Lim

Yong Jin

Ho Kyoon Lee

Kyong Seon Lim

Jong Chan Kim

A pooled memory device includes plural memory devices and a controller. The plural memory devices include a first memory and a second memory with at least one power supply configured to control power supplied to each of the plural memory devices. The controller is coupled to an interconnect device which is configured to provide the plural memory devices to at least one external device as a logical device. The controller is configured to track available storage capacities of the first memory and the second memory and cut off power supplied to an unused memory among the first memory and the second memory.

Apparatus and method for controlling a pooled memory device or a memory expander

The present technology relates to an electronic device. According to the present technology, a memory controller may include an attribute determiner configured to determine an attribute of each of a plurality of pages included in a first external device to indicate one of a hot page and a cold page, based on an access interval which is an interval from a time at which data is stored in each of the pages to a time at which access to the data is requested, a page analyzer configured to determine a ratio of hot pages having a hot page attribute to the plurality of pages, and a memory allocator configured to control one of the first external device and the second external device to store therein externally provided data based on the ratio of hot pages.

Memory controller and memory system for allocating memory based on the ratio of hot/cold pages

Provided herein may be a memory controller and a memory system including the same. The memory controller includes a scanning period controller configured to reset, whenever scanning points sequentially arrive, access information indicating whether each of a plurality of pages is accessed, and set a scanning interval for each of the pages between the scanning points for the page based on an attribute of the page, an attribute determiner configured to determine, as a hot page or a cold page, the attribute of each of the pages based on an access interval for the page from the first scanning point among the scanning points for the page to time at which access to data stored in the page is requested, and a memory allocator configured to control first and second memory devices based on the attributes of the pages.

Memory controller and memory system including the same

A memory system includes a memory device and a controller. The memory device includes plural storage regions including plural non-volatile memory cells. The plural storage regions have a different data input/output speed. The controller is coupled to the memory device via at least one data path. The controller performs a readahead operation in response to a read request input from an external device, determines a data attribute regarding readahead data, obtained by the readahead operation, based on a time difference between reception of the read request and completion of the readahead operation, and stores the readahead data in one of the plural storage regions based on the data attribute.

Apparatus and method for improving read performance in a system

A storage device is provided to comprise a memory device for storing data, a cache memory device including a first cache memory configured to cache certain data stored in the memory device and a second cache memory configured to store data evicted from the first cache memory, and a memory controller configured to receive a read request for first data from a host, evict second data from the first cache memory based on a reuse distance of the second data, store the second data in the second cache memory, load the first data to the first cache memory, and transmit the first data to the host.

Storage device and operating method thereof

A method for operating a controller configured to control subsystems in a network, each subsystem including a plurality of memory regions, includes testing a compressibility ratio of data and selecting, according to the compressibility ratio, memory regions for storing the data and replicated data.

Data storage system for data distribution and data restoration based on compressibility ratio of data and operating method of controller for controlling the data distribution and data restoration

A data storage device and a storage system including the same are disclosed. The data storage device includes a nonvolatile memory device configured to store user data and metadata including data type identification information matched with the user data, and a controller to control the nonvolatile memory device to be switched to a cold data storage device for storing cold data only when a number of program-erase (PE) cycles of the nonvolatile memory device is equal to or larger than a reference value.

Data storage device, storage system using the same, and method of operating the same

A memory system includes a non-volatile memory device and a controller. The non-volatile memory device includes plural memory groups storing plural chunks. The controller is capable of generating the plural chunks including data chunks and parity chunks based on original data, assign different priorities to the data chunks and the parity chunks, and recovering at least one chunk among the plural chunks based on the different priorities when an operation regarding the at least one chunk fails.

Growing community of inventors

Icheon, South Korea

Jun Hee Ryu