Shenzhen Dapu Microelectronics Co., Ltd.

Huawei Technologies Co., Limited

Haibo He

Qing Yang

Jing Yang

Chao Zhang

Malin Li

The present disclosure discloses a control device of data storage system, including a host interface, a peer interface, a storage unit interface, a processor and a local data management module. The host interface is connected and communicated with a storage server for data interaction with the storage server. The peer interface is configured for data communication connection with a storage unit of an adjacent control device in the data storage system. The storage unit interface is configured to connect a storage unit. The local data management module is configured for local data management of the data in the storage unit according to the data management instruction via the processor. The host interface is configured to send result data of local data management to the storage server.

Control device of storage system

The invention discloses a solid-state drive control device and a learning-based solid-state drive data access method, wherein the method comprises the steps of: presetting a hash table, the hash table comprising more than one hash value, the hash value is used to record and represent data characteristics of data pages in the solid-state drive. Obtaining an I/O data stream of the solid-state drive, and obtaining a hash value corresponding to the I/O data stream in the hash table. Predicting a sequence of data pages and/or data pages that are about to be accessed by a preset first learning model. Prefetching data is performed in the solid-state drive based on an output result of the first learning model. Through the embodiment of the present invention, when predicting prefetched data, learning can be performed in real time to adapt to different application categories and access modes through adaptive adjustment parameters, so that better data prefetching performance can be obtained.

Solid-state drive control device and learning-based solid-state drive data access method

Solid-state drives (SSD) and a data access method for SSD are provided. The method includes the following. Cache acquired data-to-be-written to a preset write cache module. Rank the data-to-be-written in the write cache module according to a least recently used page (LRU) algorithm. When data storage amount of the write cache module reaches a preset value, determine a preset number of replacement data among the infrequently used data-to-be-written according to a preset cache replacement algorithm. Write the replacement data into a flash memory of the SSD. Implementations of the present disclosure can decrease effectively the number of times of rewriting on a flash memory of the SSD, thereby reducing effectively a write amplifying problem of the SSD during data access.

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Shenzhen, China

Haibo He