It is important to test portions of a system that are unused so that they are available when needed. Finally, any system is usually part of a larger system. This service ties into the topology management of the system to provide status to the network agent and to allow remote access to control the system configuration. A well-designed set of system services can alleviate much of the work an application must do to be highly available. By providing a stable platform for system implementation, high degrees of availability can be achieved.
High availability requires careful design at all levels of system implementation.
Fault Tolerance versus High Availability 2. Redundant Configurations 3. Fault Management Process 4. High Availability and Restart Models 5. Fault Management Software for Redundant Systems 6.