6.7
Table Of Contents
- vSphere Availability
- Contents
- About vSphere Availability
- Business Continuity and Minimizing Downtime
- Creating and Using vSphere HA Clusters
- Providing Fault Tolerance for Virtual Machines
- How Fault Tolerance Works
- Fault Tolerance Use Cases
- Fault Tolerance Requirements, Limits, and Licensing
- Fault Tolerance Interoperability
- Preparing Your Cluster and Hosts for Fault Tolerance
- Using Fault Tolerance
- Best Practices for Fault Tolerance
- Legacy Fault Tolerance
- Troubleshooting Fault Tolerant Virtual Machines
- Hardware Virtualization Not Enabled
- Compatible Hosts Not Available for Secondary VM
- Secondary VM on Overcommitted Host Degrades Performance of Primary VM
- Increased Network Latency Observed in FT Virtual Machines
- Some Hosts Are Overloaded with FT Virtual Machines
- Losing Access to FT Metadata Datastore
- Turning On vSphere FT for Powered-On VM Fails
- FT Virtual Machines not Placed or Evacuated by vSphere DRS
- Fault Tolerant Virtual Machine Failovers
- vCenter High Availability
- Plan the vCenter HA Deployment
- Configure the Network
- Configure vCenter HA With the Basic Option
- Configure vCenter HA With the Advanced Option
- Manage the vCenter HA Configuration
- Set Up SNMP Traps
- Set Up Your Environment to Use Custom Certificates
- Manage vCenter HA SSH Keys
- Initiate a vCenter HA Failover
- Edit the vCenter HA Cluster Configuration
- Perform Backup and Restore Operations
- Remove a vCenter HA Configuration
- Reboot All vCenter HA Nodes
- Change the Appliance Environment
- Collecting Support Bundles for a vCenter HA Node
- Troubleshoot Your vCenter HA Environment
- Patching a vCenter High Availability Environment
- Using Microsoft Clustering Service for vCenter Server on Windows High Availability
8 Click OK.
You have a vSphere HA cluster, populated with hosts.
What to do next
Configure the appropriate vSphere HA settings for your cluster.
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Failures and responses
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Proactive HA Failures and Responses
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Admission Control
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Heartbeat Datastores
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Advanced Options
See Configuring vSphere Availability Settings.
Configuring vSphere Availability Settings
When you create a vSphere HA cluster or configure an existing cluster, you must configure settings that
determine how the feature works.
In the vSphere Client, you can configure following the vSphere HA settings:
Failures and responses Provide settings here for host failure responses, host isolation, VM
monitoring, and VM Component Protection.
Admission Control Enable or disable admission control for the vSphere HA cluster and choose
a policy for how it is enforced.
Heartbeat Datastores Specify preferences for the datastores that vSphere HA uses for datastore
heartbeating.
Advanced Options Customize vSphere HA behavior by setting advanced options.
Configuring Responses to Failures
The Failure and Responses pane of the vSphere HA settings allows you to configure how your cluster
should function when problems are encountered.
In this part of the vSphere Client, you can determine the specific responses the vSphere HA cluster has
for host failures and isolation. You can also configure VM Component Protection (VMCP) actions when
Permanent Device Loss (PDL) and All Paths Down (APD) situations occur and you can enable VM
monitoring.
The following tasks are available:
1 Respond to Host Failure
You can set specific responses to host failures that occur in your vSphere HA cluster.
vSphere Availability
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