There has to be a clear plan for who is on duty for all of the above roles
It should be clear who has the responsibility to decide when to perform the failover or recovery
All this including how to involve the customer need to be documented
Availability – What does that mean?
Introduction to Availability Concepts
High Availability – 99.9%
Very High Availability – 99.99%
Continuous Availability – 99.999%
Resiliency Model
Disaster Recovery
What is the real time experiences from Availability Management
Planning for Availability?
What does a Availability Planning Include
Assessing and designing for availability
How to test availability and Disaster Recovery
Plan your maintenance
Setup the right organization
How to be successful as Availability Manager
Service availability managment
原文：http://blog.51cto.com/johnnyxing/2106661