Instructions
Complete the following procedure to enable and disable HA on your XenServer pool:
- To enable HA for your XenServer pool (with three or more hosts), select the Pool Name/Resource Icon:
- Right-click the Pool Name/Resource icon and select High Availability...
- Alternatively, with the Pool Name/Resource icon highlighted, select the HA tab and select Configure HA…
- The Configure HA dialog box appears. Read the requirements before selecting Next.
- The configuration wizard scans the pool for a Hearbeat SR. If no suitable SR is found, the wizard will exit and one must establish the High Availability Heartbeat Storage Repository (per requirements).
- When an appropriate SR is found, select it and press Next.
- The configuration will present all VMs that are currently in the pool. It is from this configuration dialog will allow one or multiple VMs to be selected as to specify:
- The HA restart priority that defines if VMs should be – with enough resources available in the pool – Restarted, Restarted if Possible, and Do Not Restart
- The Restart Order - 0 being the highest - that specifies the priority of a VM (or VMs) to be started under a fail-over condition
- The Attempt to start next VM delay that specifies how much time should pass before starting the next priority-based VM (or group of VMs). This is to ensure pool resources are not overwhelmed when recovering from a fail-over condition
- When the HA conditions are specified, selecting Next presents a review of the HA config. Pressing Finish confirms the configuration and apply it to the pool.
- With the successful application of the HA configuration across the pool, the HA tab should show the following:
- To begin the process of disabling HA for your XenServer pool (with three or more hosts), select the Pool Name/Resource icon:
- With the Pool Name/Resource icon highlighted, select the HA tab and select Disable HA…
- When prompted to disable HA, select YES.
The HA is disabled across the pool (for each member).
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