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
vCenter HA Deployment Options
You can set up your vCenter HA environment with an embedded Platform Services Controller or with an
external Platform Services Controller. If you decide to use an external Platform Services Controller, you
can place it behind a load balancer for protection in case of Platform Services Controller failure.
vCenter HA with an Embedded Platform Services Controller
When you use vCenter HA with an embedded Platform Services Controller, the environment setup is as
follows.
Figure 4‑2. vCenter HA with an Embedded Platform Services Controller
vCenter (Active)
HA Interface
vCenter (Passive)
Witness
vCenter HA
Network
HA Interface
Mgmt Interface
Platform Services
Controller
Platform Services
Controller
Platform Services
Controller
1 The user provisions the vCenter Server Appliance with an embedded Platform Services Controller.
2 Cloning of the vCenter Server Appliance to a Passive and a Witness node occurs.
n
In a Basic configuration, the configuration creates and configures the clones.
n
In an Advanced configuration, the user creates and configures the clones.
3 As part of the clone process, Platform Services Controller and all its services are cloned as well.
4 When configuration is complete, vCenter HA performs replication to ensure that the Passive node is
synchronized with the Active node. The Active node to Passive node replication includes
Platform Services Controller data.
5 When configuration is complete, the vCenter Server Appliance is protected by vCenter HA. In case of
failover, Platform Services Controller and all its services are available on the Passive node.
vSphere Availability
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