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Reading/writing method for memory-network memory-magnetic disc high speed reliable storage system LND

A technology of network memory and storage system, applied in the field of computer storage system structure to achieve the effect of improving efficiency and reliability

Inactive Publication Date: 2009-03-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current network transmission rate has reached 100Mbits / sec, and ATM155Mbits / sec networks on OC-3 are also very common, and even 1000Mbits / sec myrinet or Gigabit Ethernet have appeared, and memory access is very fast, and It can be read and written randomly, without the fatal weakness of long hard disk seek time

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  • Reading/writing method for memory-network memory-magnetic disc high speed reliable storage system LND
  • Reading/writing method for memory-network memory-magnetic disc high speed reliable storage system LND

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Embodiment Construction

[0036] The LND system consists of a busy node computer and multiple idle node computers, and the two types of computers are interconnected by 100M or 10M Ethernet. The user's application program runs on the busy node computer, and obtains high performance and high availability of disk synchronous write operations by accessing the virtual disk device on it.

[0037] LND's virtual disk device is provided to users in the form of a virtual block device. The advantage of the block device is that the interface is completely transparent, and the user's operation on the block device is exactly the same as that on the ordinary hard disk. It can be partitioned, formatted, and any file system can be established on it. Such a transparent interface can ensure that the user's application program can obtain all the advantages of the LND system without any modification.

[0038] The address space of the entire LND device is determined by the configuration of the system and the amount of memo...

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Abstract

Through network, the method simulates local hard disk by using memory in remote machine in order to raise data processing efficiency and reliability of system data so that a distributed memory system in high performance is constructed as a short form LND. LND includes: a client end i.e. a computer in busy node; multiple servers, which are computers at more free node to provide memory for local use; the said client end and the said computers are connected through Ethernet. LND system constructs a virtual disk from memories at free nodes, and the client end maps the virtual disk to a local directory. Thus, reading / writing the directory is converted to reading / writing memory at remote side. The invention realizes communication between nodes through group communication protocol. Synchronization reading / writing performance of the invention is better than SCSI hard disk system.

Description

technical field [0001] The memory-network memory-disk high-speed reliable storage system LND reading and writing method belongs to the technical field of computer storage system structure. Background technique [0002] Improving the reliability and execution efficiency of computer system applications is an important topic in the field of computer research, and the technical issues involved are concentrated in two aspects: the first is various measures to improve the reliability of application programs, including for IO-intensive and computing Different technologies for intensive applications; the other is the read and write performance of computer storage systems, including the hierarchical structure design of internal storage systems and the development of various storage devices. However, in the traditional computer application environment, there is always a contradictory relationship between the improvement of the performance of these two aspects, which is largely related...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/00G06F12/00G06F15/16
Inventor 郑纬民张悠慧毛昀
Owner TSINGHUA UNIV