VMware GSX Server 3 Administration Spécifications télécharger pdf (Page 197)

CHAPTER 7 High-Availability Configurations with VMware GSX Server

197

Overview of Clustering with GSX Server

GSX Server clustering capabilities are ideally suited for development, testing and

training applications.

Note: Always rigorously test and review your cluster before deploying it in a

production environment.

This section includes:

• Applications That Can Use Clustering on page 198

• Clustering Software in Virtual Machines on page 198

Clustering is providing a service via a group of servers to get high availability,

scalability or both.

For example:

• In a Web server cluster where the Web site serves static content, a gateway

distributes requests to all nodes according to load. The gateway also redirects

requests to remaining nodes if one crashes.

This configuration increases availability and performance over a single-machine

approach. Network Load Balancing in Windows 2000 provides such a service.

• In a more complex cluster, a single node might serve a database. If that node

crashes, it must restart the database on another node. The database application

knows how to recover from a crash. In normal operation, other nodes run other

applications.

Microsoft Cluster Service and Veritas Cluster Service provide such a service.

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VMware GSX Server 3 Administration Spécifications Page 197