Database service system used for railway dispatching center

Abstract

The invention provides a database service system used for a railway dispatching center. The database service system comprises a first database server, a second database server, a first optical fiber switcher, a second optical fiber switcher, a first disk array, a second disk array and a quorum disk array; the first database server is respectively connected with the first optical fiber switcher andthe second optical fiber switcher, and the second database server is respectively connected with the first optical fiber switcher and the second optical fiber switcher; the first disk array is respectively connected with the first optical fiber switcher and the second optical fiber switcher to be taken as a main database storage, and the second disk array is respectively connected with the firstoptical fiber switcher and the second optical fiber switcher to be taken as a redundant backup database storage. The database service system can achieve data redundant backup storage and avoid the single point failure problem, the stability and safety of the database service system are improved, and requirements of long-term stable operating to a CTC system are met.

Description

technical field [0001] The invention relates to a database service system, in particular to a database service system for a railway dispatching center, and belongs to the technical field of databases. Background technique [0002] The database server is a key component of the Centralized Traffic Control (CTC) system applied in the railway system environment. It is mainly used to store the key data of the centralized train dispatching business, such as train diagram plan, operation performance, dispatching order, representation Information and other scheduling centralized business data. [0003] The database server systems in the prior art mostly use two sets of high-performance database servers and a single set of disk arrays to realize the storage service of system scheduling centralized business data, which has the following disadvantages: [0004] (1) The reliability of a single disk array cannot meet the needs of long-term stable operation of the centralized railway dis...

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Problems solved by technology

[0004] (1) The reliability of a single disk array cannot meet the needs of long-term stable operation of the centralized railway dispatching system. The disk array is a single point of failure in the system. Once a failure occurs, there is no redundant equipment to provide backup support, and the disk array belongs to the system. Once the key components of the system fail, the database system will inevitably be unusable, which in turn will cause the entire CTC system to fail to operate normally

In actual use, there have been many failures in which the disk array is damaged and the CTC system cannot operate normally, so it is necessary to consider a redundancy scheme for the disk array

[0005] (2) Most of the existing disk arrays use RAID and other methods to achieve redundancy between multiple disks, which has certain reliability. However, when multiple disks are damaged in a short period of time and exceed the limit of the RAID redundancy mechanism, it will cause disk array unavailable

In actual use, multiple disks were damaged in a short period of time, causing the CTC system to fail to operate normally. This shows that the reliability level of the current RAID method is still unable to meet the 7×24 (day×hour) stable operation of the CTC system. need

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