On-satellite ultra-high-speed storage system and method

Abstract

The invention discloses an on-satellite ultra-high-speed storage system and method, and relates to the field of storage, the on-satellite ultra-high-speed storage system is based on a non-volatile memory host controller interface specification (NVMe protocol), takes a standard NVMe SSD as a storage medium, takes ZYNQ UltraScale + multi-core SOC as a control core, realizes high-speed data acquisition by FPGA side logic, runs a Linux operating system on an ARM side, and realizes NVMe protocol driving, hard disk read-write control and file system management, and finally, the functions of high-speed data acquisition, transmission, storage, playback and the like are realized so as to meet the requirements of high capacity and high performance of future satellite data storage. The method has the advantages of high storage and reading speed, easiness in hardware implementation, simplicity in storage management, high design flexibility, high universality and the like, and is suitable for embedded application scenes such as remote sensing satellites and the like.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to an on-board ultra-high-speed storage system and method. Background technique [0002] The on-board storage system is the center of satellite data reception, processing and storage, responsible for the sending, receiving and storage of satellite payload data, and is an important part of the satellite's completion of remote sensing image acquisition tasks. In recent years, with the rapid development of aerospace technology, the resolution of remote sensing satellites has become higher and higher, the number and accuracy of sensing and detection equipment have increased significantly, and the amount of data has become larger and larger. These changes have a great impact on the storage system. Functionality and performance also put forward higher requirements. [0003] Traditional satellites mostly use on-board solid-state memory based on NAND Flash storage media. The on-board data...

AI Technical Summary

Problems solved by technology

However, the bandwidth of SATA is limited. Taking the highest SATA3 as an example, the interface rate is 6Gbps, and the performance of a single disk often cannot meet the high-speed storage bandwidth requirements of satellites. Multiple chips are required to form an array to read and write in parallel.

This increases the difficulty of host computer management, especially considering the failure of a single disk or multiple disks, in order to ensure system reliability, a failure plan needs to be designed, and the management logic is further complicated

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