Industry-University Cooperation Foundation Hanyang University

Samsung Electronics Co., Ltd.

Industry-Academic Cooperation Foundation, Dankook University

Tli Inc.

Jong Moo Choi

Sung Roh Yoon

You Jip Won

Soo Yong Kang

Jae Hyuk Cha

Jong Hwa Kim

Sang Yup Lee

Jong Min Lee

Dong Wook Kim

Sung Min Park

Jae Ho Kim

Dong Hee Lee

Sam Hyuk Noh

Mi-Kyoung Park

Myung Hoon Oh

Ik Joon Son

Tae Hwa Lee

Ho Young Jung

Hee Kwon Park

An apparatus for storing a key value store file according to an embodiment includes a memory configured to record one or more key values in a predefined unit space based on a data input request from an outside, a controller configured to store data received from the memory in a storage, and the storage configured to include a plurality of zones. The controller is configured to perform a flush operation of storing one or more key values received from the memory as a file in a predefined format in the storage and a compaction operation of merging a plurality of files existing in one level in the storage and recording the merged files as one file in another level.

Apparatus and method for storing file of key value store on zoned storage

The present invention relates to an apparatus and method for indicating flash memory life. While data is being stored in a flash memory, the number of writes in a plurality of blocks of the flash memory increases. The amount of flash memory life is calculated on the basis of the number of write times in the plurality of blocks. The calculated amount of life can be transmitted to a host. In addition, when the calculated amount of life is greater than a threshold value, a signal providing notice that the life of the flash memory has reached a dangerous level can be output.

Apparatus and method for indicating flash memory life

The present invention relates to a grouping method and device for enhancing redundancy removing performance for a storage unit such as a hard disk, a solid state disk (SSD), etc. The grouping method for enhancing performance of a redundancy removing technology may include: extracting samples from data that is stored in a buffer of a memory and is standing by to be processed; performing remaining calculations on the extracted samples; and grouping samples by connecting them to a bucket corresponding to a resultant value of the remaining calculations.

Grouping method and device for enhancing redundancy removing performance for storage unit

Provided is a control device for managing a plurality of memory channels driven through multichannel interleaving. The apparatus includes a stripe configuring unit for configuring a stripe according to a physical number of pages included in the plurality of memory channels, and a parity generating unit for generating parity data on the configured stripe.

Efficient raid technique for reliable SSD

The present invention relates to a storage device that uses a flash memory that performs power loss recovery, and to a method of power loss recovery by using the storage device using the flash memory. The storage device stores change information on metadata in physical pages in which one or more logical pages are compressed and stored. The change information on the metadata is information representing how the metadata is changed in association with data in the one or more logical pages. The storage device may synchronize the metadata in the flash memory and recover the metadata by applying the change information on the metadata to the synchronized metadata when a power supply is disrupted.

Method and apparatus for power loss recovery in a flash memory-based SSD

The present invention relates to a method and device for storing data in a flash memory using address mapping for supporting various block sizes. A storage device determines the size of a block that a host system uses on the basis of the size of data that the host system requests and uses the determined block size as a mapping unit. Additionally, the storage device divides a logical address space into at least one area, and maps an address using the minimum units of different mappings in each divided area.

Method and device for storing data in a flash memory using address mapping for supporting various block sizes

A virtual system comprises hardware, a virtualization layer virtualizing the hardware, a virtual machine monitor, a user domain operating using the virtualized hardware, and a root domain operating using the virtualized hardware and managing the user domain. The virtual machine monitor analyzes an operation performed by the user domain in real time and stores resulting analysis information in the root domain.

Virtual system and method of analyzing operation of virtual system

Growing community of inventors

Gyeonggi-do, South Korea

Jong Moo Choi