A storage system design method based on pcie data transmission
A storage system and data transmission technology, applied in the field of computer communications, can solve the problems of inability to achieve high-speed data transmission, low transmission efficiency, and impact on the performance of data read and write in the storage system, achieving low cost, ensuring high efficiency, and improving reliability. Effect
Active Publication Date: 2018-01-02
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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Problems solved by technology
The current common practice is to use the SAS controller to connect the hard disk, that is, PCIE is first converted to the SAS protocol, and then connected to the SAS hard disk. Due to the time delay of the transmission speed of SAS and the conversion of PCIE to SAS protocol, the storage system The data read and write performance is greatly affected. In this method, there is SAS protocol conversion between the CPU and the hard disk, and the transmission efficiency is not high.
This transmission method of stored data cannot meet the high-speed transmission requirements of data; as the requirements for high-speed data transmission of the server system continue to increase, in order to ensure the stable operation of the server system, in the actual operation process, the high-speed availability of the storage system must be realized. Control design is particularly important and has become one of the key factors determining the performance of server storage systems
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[0020] The advantages and design content of the storage system design method based on PCIE data transmission described in the present invention will be described in detail below through an embodiment:
[0021] In this implementation, the CPU PCIE2.0 interface of each server motherboard is led out and used as a data exchange channel, and a DC blocking capacitor is added to each PCIE channel to eliminate the floating of the DC level; every 16 PCIE channels are used as a group, The signals of 16 transmission channels are used as a physical address port, and each 16 transmission channels are used as a whole on the system driver side, and a common physical address is used as a PCIE device to realize simplified management of the operating system;
[0022] In addition, the 16 PCIE transmission channel signals corresponding to each physical address port are branched in four ways, that is, every 4 PCIE transmission channel signals are used as a virtual channel, and the method of dividin...
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The invention discloses a storage system design method based on PCIE data transmission, which includes: leading out the CPU PCIE2.0 interface of the server motherboard as a data exchange channel, and using every 16 PCIE channels as a group corresponding to a physical address port; The 16 PCIE transmission channel signals are divided into four branches, and the four virtual addresses are respectively corresponding to form a virtual PCIE address channel; the virtual PCIE address channel is connected to the input end of the storage FLASH controller, and the storage FLASH controller directly implements the PCIE protocol Decode, and directly allocate and store the data to the FLASH particles; when reading the operation, the storage FLASH controller performs PCIE encoding on the data in the FLASH, and puts the data directly into the virtual PCIE address channel to realize the high speed of the entire PCIE link , Low-latency data transmission.
Description
technical field [0001] The invention relates to the field of computer communication, in particular to a storage system design method based on PCIE data transmission. Background technique [0002] Today's server storage systems have higher and higher design requirements for transmission performance. As the data access center, the storage system undertakes the functions of reading system computing data and providing data services. The transmission performance of the server storage system is the The amount of read and write data reflects the external data service capabilities of the entire system. Users continuously write data into the storage system and take data out of the storage system continuously. The current storage system design of the server system can only meet the requirements of mainstream hard disk reading The specification requirements of writing speed, when users need a large amount of high-speed real-time data, the transmission performance bottleneck of the stor...
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IPC IPC(8): G06F12/08G06F3/06G06F13/16
Inventor 刘涛刘士豪
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD