Server dual-host Fault Tolerance (1)

The dual-server fault tolerance system mainly uses the High-reliability dual-host fault tolerance control system software-DataWare software. DataWare is a dual-host Fault Tolerance software that needs to be used in combination with a hardware array. Because a shared disk array is used as a data source, you do not need to perform heavy data synchronization. DataWare is widely used in Windows NT and Windows 2000 Server platforms. It can be installed in the primary Domain, backup Domain Server, or independent Server, and can be used in Domain and Workgroup mode to implement dual-host fault tolerance.
DataWare operations are GUI. the system administrator can view the system running status at any time through the intuitive and dynamic monitoring interface.
System Functions
The dual-server fault tolerance system aims to ensure that the system will never stop and data will never be lost. The disk array cabinet is used to solve the problem of never loss of data. The DataWare dual-host Fault Tolerance software is used to solve the problem that the system service will never stop.
In a dual-Machine Fault-tolerant system, the two servers act as the worker at the same time. Normally, the system is Active and each server provides different services for network users. The two servers monitor the running status of each other's servers. When server A encounters an exception, server B can promptly monitor the situation and take over its work. After server A is restored to normal after repair, the system administrator switches the work of server A undertaken by server B to server A through management commands or through Shell programs manually or automatically. At this time, the work of the two servers is back to normal.
Device status
The server used in dual-server fault tolerance system is also configured with the same model as HP LH6000, Which is Xeon PIII 700, 2 CPUs, and MB memory, six 18 gb scci hard disks and RAID 5 Operating modes. Windows 2000 Server is used for network operating systems, one of which serves as the primary domain Server and the other as the backup Domain Server. The main application is to provide Sybase Database Service Sybase 12.0 to all computer terminals in this bureau), Lotus mail service Lotus Domino5.0.4), FTP business software automatic update service.

 
Figure 1 system hardware device Diagram

System Structure
Figure 1 shows the dual-Fault-Tolerant server hardware diagram in the dotted line. The hardware system consists of two servers and a disk array used to store shared data. PrivateNet VPC is used to detect heartbeat information) architecture. The software uses the DataWare Fault Tolerance software that monitors Dual Servers. Through the close combination of hardware and software, we provide you with an application operation platform with single point of failure (spof) fault tolerance capability and superior price and performance.