→ Applies to: SynetoOS 6.1.0 and above

VM Autostart is a feature that automatically determines whether, when, how and in what order Virtual Machines should power on or off when the underlying physical host boots up or shuts down.

Step 1. Login to SynetoOS GUI

Step 2. From the Virtualization menu, click on Hypervisors

Step 3. Select the Hypervisor on which the VMs reside, then navigate to the Autostart tab and toggle the autostart status switch to Enabled

Step 4. Select Edit from any of the 2 available fields to configure autostart default settings

Step 5. Configure the default autostart behavior, then click on Update

• Start delay (seconds): The time the physical host waits after booting up before it begins powering on the first virtual machines. This prevents data corruption by allowing storage and networks to fully stabilize first.
• Continue Start on Heartbeat: If enabled, the host will not wait for the full Start Delay to expire — as soon as a VM reports it is running, the next VM in the boot order starts immediately.
• Stop delay (seconds): The time the physical host waits before forcefully powering off a VM.
• Stop Action: The command sent to VMs when the physical host shuts down:
  • Shutdown: Gracefully turns off the guest OS (Recommended to prevent data loss).
  • Power Off: Instantly cuts power to the VM (Risk of data corruption).
  • Suspend: Freezes the VM's current state to disk, allowing it to resume exactly where it left off.

Step 6. In the Virtual machines autostart section, select the VMs you want to apply the autostart feature, then click on Enable

This applies the default autostart settings configured in Step 5.

Step 7 (optional). A custom autostart behavior can be set by selecting the desired VMs and then selecting Configure

EXAMPLE

Step 8. Move the VMs up or down into the desired order to set the boot sequence