Description

The HCI node can be associated with the UPS power supply. When the mains line fails, it supports setting different shutdown thresholds for virtual machines of different importance levels. By default, when the remaining power of the UPS drops to 80%, the non-core virtual machines are shut down. Likewise, when the remaining power of the UPS reaches 30%, the core virtual machines are shut down (users can set the trigger threshold according to their own needs) to achieve the effect of protecting services.

Prerequisites

The platform can only detect the network connection status between the UPS and the host. Please ensure that the node's power supply is connected to the associated UPS. Also, ensure that the physical switch connecting the node and the UPS is powered.

Precautions

1. When the physical host is powered by both the utility power and the UPS power supply (as shown in the figure), it is recommended not to enable the shutdown policy to prevent the linkage shutdown mechanism from being triggered when the power supply connected to the UPS is powered off.

2. After the shutdown policy is enabled, the virtual machine running on the associated node will be shut down when the UPS's battery power is lower than the set threshold. Still, the physical node will not be shut down.
3. When the node is associated with multiple UPSs, the associated UPS must be powered by batteries simultaneously. Therefore, the linkage shutdown mechanism will be triggered when the power is less than the set threshold.
4. If Resource Scheduling is enabled, virtual machines are not scheduled to physical nodes powered by UPS batteries.
5. If the UPS is already offline on the page, the platform will not execute the coordinated shutdown policy for the host associated with the UPS.

Steps

1. Go to Reliability > UPS and click Add UPS. Enter the name, IP address, version, and read community, select the appropriate OID and click OK to add.

2. After the UPS power supply is added to the HCI, click Attach to Nodes to associate the UPS with the node.

3. Click UPS-Powered VM Shutdown to enable or disable the UPS coordinated shutdown policy, make specific policy settings, set the first and second stage threshold, and select the virtual machine as the core virtual machine.

4. Click View Auto Shut-Down VMs to view which VM had been shut down automatically. The virtual machine can be powered on after disabling the UPS linkage policy.