You enable HA for a resource pool using the Configure HA wizard. The wizard takes you through the HA configuration process, step-by-step, calculating the server failure limit for the pool given the available resources and the HA restart priorities you specify.
To open the Configure HA wizard: in XenCenter, select the pool, click on the HA tab, and then click Configure HA.
To configure HA on a pool:
|HA restart priority||Choose a restart priority for each VM:
|Start order||Specifies the order in which individual VMs will be started up during the HA recovery operation, allowing certain VMs to be started before others. VMs with a start order value of 0 (zero) will be started first, then VMs with a restart order value of 1, followed by VMs with a start order value of 2, and so on.|
|Attempt to start next VM after||This is a delay interval that specifies how long to wait after starting the VM before attempting to start the next group of VMs in the startup sequence, that is, VMs with a lower start order.|