VMware ESXi 5.0, shutdown when UPS battery runs low

I have a number of clients who are running VMWare ESXi 5.0 free edition servers, and they usually have some form of cheap UPS connected to the server.

The most common one is the CyberPower PureSinewave 1500VA UPS, which can power the server for about 10 minutes or so before it shuts down.


The UPS normally connects to the PC over USB. On a regular computer, this USB would appear like a laptop battery, and Windows can initiate a shutdown or standby just like a laptop does.

How can I get VMWare ESXi to standby the virtual machines and power off if the UPS goes onto battey power?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Using the free version of ESXi has it's complications because you will lack the ability to perform any management functions in the host server, because it's not supported on the free version.

see the following Article


you will need to create a script to trigger the functions in the article.
CyberPower brand battery backups have a VM appliance based on CentOS that is specifically designed for ESXi and Xen Server.  Installed the VM appliance.  

As long as each VM has VMware Tools installed it will do a clean shut down off each VM and then shut down the host.  It will also shut itself off if so configured.

You can configure it to send email notifications on numerous events

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I believe this link sums up exactly what you are looking to do:

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
@Frosty555 Did these solutions work for your clients with the FREE version of ESXi?
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