6.0.1

Contents
About vSphere Availability 5
Updated Information 7
1
Business Continuity and Minimizing Downtime 9
Reducing Planned Downtime 9
Preventing Unplanned Downtime 10
vSphere HA Provides Rapid Recovery from Outages 10
vSphere Fault Tolerance Provides Continuous Availability 11
2
Creating and Using vSphere HA Clusters 13
How vSphere HA Works 13
vSphere HA Admission Control 23
vSphere HA Interoperability 29
Creating and Configuring a vSphere HA Cluster 32
Best Practices for vSphere HA Clusters 40
3
Providing Fault Tolerance for Virtual Machines 45
How Fault Tolerance Works 45
Fault Tolerance Use Cases 46
Fault Tolerance Requirements, Limits, and Licensing 46
Fault Tolerance Interoperability 47
Preparing Your Cluster and Hosts for Fault Tolerance 49
Using Fault Tolerance 51
Best Practices for Fault Tolerance 55
Legacy Fault Tolerance 57
Index 61
VMware, Inc. 3