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03-25-2025 11:08 PM
03-25-2025 11:08 PM
Maintenance Mode and Failover
・About maintenance mode
If you set a host to maintenance mode while a VM is running, I think the running VM will migrate to another host. (If migration is possible)
When you cancel maintenance mode, will the VM that was migrated to another host automatically fail back?
・About failover
Select "Auto" or "Failover" for the VM's "PLACEMENT STRATEGY". I think it will migrate to another host in the event of a host failure, but if the failed host recovers, will the VM that was migrated to the other host automatically fail back?
If the behavior changes between "Auto" and "Failover", please also tell me the difference.
*Sorry if this is difficult to understand as it is machine translated.
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03-25-2025 11:40 PM
03-25-2025 11:40 PM
Re: Maintenance Mode and Failover
What I want to achieve is the ability to choose between "automatic failback" or "manual failback".
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03-29-2025 02:27 PM
03-29-2025 02:27 PM
Re: Maintenance Mode and Failover
Do you understand this?
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04-22-2025 10:54 AM - edited 04-22-2025 12:05 PM
04-22-2025 10:54 AM - edited 04-22-2025 12:05 PM
Re: Maintenance Mode and Failover
I have been testing this feature for a while and I can confirm the following:
- When the placement strategy is set to "Failover", the VM won't be moved from a host under normal operation. If the host is placed in Maintenance mode, the VM will be moved and it will be placed back into the host after the host gets out of maintenance mode, you just have to wait a while for the task to start (10-15 minutes). If the Host fails, the VM will be restarted in a different node and it will be moved back after the host comes back online
- When placement strategy is set to "Pinned", the VM won't be moved under normal operation. If you try to place the host in Maintenance mode, you won't be allowed and a message will be displayed stating that a VM is pinned and you won't be able to continue. If the host fails, the VM won't be restarted in a different node and it won't be automatically restarted when the host comes back online.
I hope this helps and please mark the post as the solution if it's helpful so other users are able to find the answer
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[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]

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04-23-2025 05:15 AM
04-23-2025 05:15 AM
Re: Maintenance Mode and Failover
thank you.