The resilience policy sets the virtual machine migration policy in the event of host failure. Virtual machines running on a host that unexpectedly shuts down or is put into maintenance mode are migrated to other hosts in the cluster; this migration is dependent upon your cluster policy.
Note
Virtual machine migration is a network-intensive operation. For instance, on a setup where a host is running ten or more virtual machines, migrating all of them can be a long and resource-consuming process. Therefore, select the policy action to best suit your setup. If you prefer a conservative approach, disable all migration of virtual machines. Alternatively, if you have many virtual machines, but only several which are running critical workloads, select the option to migrate only highly available virtual machines.
The table below describes the settings for the Resilience Policy tab in the New Cluster and Edit Cluster windows.
Table 4.3. Resilience Policy Settings
|
Field
|
Description/Action
|
|---|---|
Migrate Virtual Machines
|
Migrates all virtual machines in order of their defined priority.
|
Migrate only Highly Available Virtual Machines
|
Migrates only highly available virtual machines to prevent overloading other hosts.
|
Do Not Migrate Virtual Machines
| Prevents virtual machines from being migrated. |