Network storage system

Abstract

The invention provides a network storage system which comprises an application server, data storage nodes, a resource allocation manager used to manage the address mapping relation of a storage resource, and redundancy management nodes used to manage the data redundancy relation among the data storage nodes, wherein, the application server directly accesses the data storage nodes, the redundancy management nodes are respectively connected to the rear end of each data storage node, and the redundancy management to the data storage nodes is realized by the redundancy management nodes. The system transfers the redundancy management nodes from the front end of a data channel to the rear end of storage equipment, which ensures that a reading / writing request on the application server can directly access the storage nodes and solves the performance bottleneck problem of control nodes of the front-end centralized redundancy management; and the redundancy management nodes perform the cache to data first and then compute redundancy data when a system is idle, which reduces the influence of the redundancy computation on the writing performance of the system.

Description

technical field [0001] The invention relates to the field of computer storage, in particular to a network storage system. Background technique [0002] In the data-centric information age, how to properly and effectively protect data is one of the core issues of storage systems. People can tolerate abnormal computer downtime, all application restarts, and even hardware damage, but they demand that information should never be lost. The most important task of the storage system is to ensure that the stored information will not be lost no matter what failure occurs, and try to provide high-quality data services without interruption. The destruction and loss of data information not only affects the business continuity of the enterprise, but even greatly threatens the survival of an organization. [0003] In order to ensure the security of the data stored in the disks, those skilled in the art have proposed Redundant Array of Independent Disks (RAID) technology, which combines ...

AI Technical Summary

Problems solved by technology

[0005] 1. The control management node is in front of the data storage node, resulting in the IO throughput being limited by the interface bandwidth and processing capacity of the control management node;

[0006] 2. The forwarding delay caused by the control management node forwarding data leads to an increase in IO response time, which cannot fully utilize the concurrent communication and parallel storage capabilities of multiple data storage nodes;

[0007] 3. The centralized redundant calculation implemented in the control management node will also lead to the decline of the performance of the control management node;

[0008] 4. The data lowercase update problem will also increase the burden of data block transmission between the control management node and the data storage node

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