What happens with the Guest OS's on ESXi in the event of a power failure?

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Many small businesses would prefer to
let their server drop on power failure than to pay even $100 for a cheap UPS. It's often
difficult to convince them of the value of something like that; it's why they like ESXi.
It's free, they can save a lot of cash by putting a bunch of linux servers on one
machine, and then I get paid. :)

If the ESXi
server experiences a power outage, it is set to come back on automatically when power is
restored. What happens with the guest OS's? Ideally I would like them to all come online
again as well, assuming they were on when power was lost, but I see no option for
choosing this.

I don't want to yank power to the
system just to try it out, of course. I'm sure someone knows what happens by default,
and perhaps how to make my system to work as I would wish.

Answer

You can set the guest virtual machines to start up in a specific or general
order... This is under the Configuration ->
Virtual Machine Startup/Shutdown
menu.

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