Abstract:
A storage system and a method for synchronizing the storage system are provided. The storage system includes a plurality of storages with a time slot; and a storage controller providing a signal to the storages. The time slot is initialized according to the signal and the storages are synchronized.
Abstract:
An operating method of a system including a memory-based storage device and a host comprises: a step in which the host receives information of a free space size able to program from the memory-based storage device; and a step in which the host creates parameters in order to control the performance of garbage collection of the memory-based storage device based on the information of the free space size, and transmits the created parameters to the memory-based storage device. The method additionally comprises a step in which the memory-based storage device performs the garbage collection based on a first parameter.
Abstract:
PURPOSE: A memory system and a metadata management method thereof are provided to reduce storage time of metadata by recording a divided part of the metadata and log data including changes in a non-volatile memory device. CONSTITUTION: A buffer memory(120) provisionally stores log entry information composing log data and metadata divided into groups. A memory controller(130) updates the metadata stored in the buffer memory and generates the log entry information corresponding to a change of the metadata according to operation generating the change in a non-volatile memory device(140) in order to store the information in the buffer memory. The memory controller stores the log data and the metadata of a sequentially selected group in the non-volatile memory device every time the number of the log entry information reaches a threshold value. [Reference numerals] (110) Processor; (120) Buffer memory; (130) Memory controller; (140) Non-volatile memory device; (150) Host interface; (AA) Host device
Abstract:
PURPOSE: A method of read/write performance of non-volatile data storage device is provided to improve the read and write speed by reading data with sequential read function, even though the data is stored in a random write function. CONSTITUTION: The logs are created after collecting patterns(402). A logical address sequentially read is extracted based on the logs(406). The physical address status of the non-volatility data storage unit where logical address are mapped is checked(408). The logical addresses of data read in sequence are rearrange to be read in an interleaving unit(410). The rearranged data is read in a interleaving mode(412).
Abstract:
본 발명은 페이지 대체(page replacement)에 관한 발명으로서, 본 발명의 실시에 따른 페이지 정보를 이용한 페이지 대체 방법은 주메모리 영역에서 페이지들을 사용된 순서대로 연결한 제1 페이지 리스트를 형성하는 (a) 단계와, 상기 제1 페이지 리스트 중에서 저장 매체에 상기 주메모리 영역의 페이지에 저장된 데이터와 동일한 이미지가 저장된 페이지들을 사용된 순서대로 연결한 제2 페이지 리스트를 형성하는 (b) 단계 및 상기 제2 페이지 리스트의 페이지에 상기 저장 매체로부터 로딩한 데이터를 상기 순서의 역순으로 저장하는 (c) 단계를 포함한다. 페이지 대체(page replacement), LRU(Least Recently Used)