On a public service demands that always ready in 24 hours, needed a high availability management that make sure system is always running. Therefore, if we want to  create a system with a high level of availability is not as easy and simple as installing a piece of software and hardware, or using not just run a command periodically with a syntax xxx –full-online.

If we want to build system with high availability,  it’s needed best platform and system to make sure public service always running anytime from node to node. Analyze and performance test of each element, constructing and testing an end-to-end solution that encompasses people, process, and technology is the only tried-and-true method of preparing for a potential disaster. Redundant technology for availability only provides the end physical manifestation of a larger, agreed-on goal that also takes into account security and performance.

… continue reading : High Availability and Secret of Number Nine.