The Availability Manager / Service Availability Manager need to have a set of roles defined in the organization:

Infrastructure people who can perform HA failover and verify that it workedApplication people who can perform application level failover and verify that it workedPeople to execute the DR plans when necessaryPE, DPEs and SILs to manage that everything works

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 ConceptsHigh Availability – 99.9%Very High Availability – 99.99%Continuous Availability – 99.999%Resiliency ModelDisaster RecoveryWhat is the real time experiences from Availability ManagementPlanning for Availability?What does a Availability Planning IncludeAssessing and designing for availabilityHow to test availability and Disaster RecoveryPlan your maintenanceSetup the right organizationHow to be successful as Availability Manager