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Multipath fibre channel (FC) business long distance transmission method based on field programmable gate array (FPGA), and multipath FC business long distance transmission device based on FPGA

A long-distance transmission and service technology, applied in the fields of storage area network service, data storage service and DWDM transmission service, it can solve the problems of affecting the use of equipment and the small number of credits, and achieve the effect of improving the transmission bandwidth of equipment

Active Publication Date: 2014-11-19
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

[0008] The existing storage system using FC as the transmission channel has a relatively small number of credits, which can effectively support the transmission of about 20Km without loss of bandwidth. In the off-site backup system (over 200KM is off-site), no distance expansion is required. The effective transmission rate of the storage system using FC as the transmission channel is only about 1% of the theoretical bandwidth, which affects the use of equipment

Method used

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  • Multipath fibre channel (FC) business long distance transmission method based on field programmable gate array (FPGA), and multipath FC business long distance transmission device based on FPGA
  • Multipath fibre channel (FC) business long distance transmission method based on field programmable gate array (FPGA), and multipath FC business long distance transmission device based on FPGA
  • Multipath fibre channel (FC) business long distance transmission method based on field programmable gate array (FPGA), and multipath FC business long distance transmission device based on FPGA

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Embodiment Construction

[0077] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0078] The FPGA-based multi-channel FC service long-distance transmission method of the present invention adopts the FPGA+DDR2 mechanism to meet the long-distance expansion and ensure the correctness of data content and the stability of the rate. Specifically:

[0079] When FC services are transmitted over long distances between the local and remote ends,

[0080] The local response policy mechanism is used instead of the remote response policy mechanism,

[0081] The FC data frames transmitted by DDR2 buffer are used for time-sharing storage of multi-channel services.

[0082] Such as figure 1 , 4 As shown, the remote response policy mechanism refers to: send data from the PortA port (A port) to the PortB port (B port), and the B port has 10 caches that can accommodate the data frame of the A port. At this time, the credit corresponding to the A port Th...

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Abstract

The present invention relates to a multipath FC business long distance transmission method based on an FPGA, and a multipath FC business long distance transmission device based on the FPGA. When the FC businesses are in long-distance transmission between the locality and a far end, a local response strategy mechanism is used to substitute for a far-end response strategy mechanism, and the FC data frames of DDR2 cache transmission are used to carry out the time sharing storage of the multichannel businesses. The method and the device of the present invention enable the multipath FC businesses to realize the long distance redundancy of more than 3000 KM while not losing the transmission speed, and enable the device transmission bandwidth to be improved to more than 95%; the method and the device of the present invention do not depend on the types of the devices, and can realize the interconnection and tests with the devices of different manufacturers as long as the devices provide the FC1G / 2G ports, and the functions of the ports are normal, and under the premise of rate matching; the device and the method of the present invention can match a wavelength division multiplex system to be widely used in the bank, insurance and enterprise data storage backup systems, enable the efficiency of the devices to be improved effectively, and the number of the device terminals of the operators and the power consumption to be reduced, and realize the energy saving and emission reduction.

Description

technical field [0001] The present invention relates to storage area network business, data storage business and DWDM (Dense Wavelength Division Multiplexin, intensive light wave multiplexing) transmission business, specifically a kind of multi-channel FC (Fibre Channel) business based on FPGA (Field Programmable Gate Array) Long-distance transmission method and device. Background technique [0002] Fiber Channel (Fibre Channel, FC) has become one of the mainstream technologies of storage area network (SAN, Storage Area Network) due to its advantages of good scalability, high bandwidth, strong versatility and long transmission distance. The current rate can support 1.0625G , 2.125G, 4.25G, 8.5G. [0003] In recent years, enterprise storage usage has grown dramatically, and there has been greater public awareness of the importance of business continuity and disaster recovery. With the continuous expansion of SAN scale and data security considerations, the servers and data c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/00H04L12/811H04L47/22
CPCH04J14/0227H04L1/0013H04L1/1858H04L47/10H04L47/225H04L67/1097H04L67/568
Inventor 孙天春康俊任怀平张思思
Owner FENGHUO COMM SCI & TECH CO LTD
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