Good afternoon,
I think many people have encountered the problem but I don't find any solution until now. We have many virtual machines with Windows 2012 servers on ESXi 5.5.0 hosts. These Windows 2012 servers are configured to download windows updates and wait for install but when we encounter a power failure, the IPP (Intelligent Power Protector) send the order of shutdown to the host (the guests are configure to shutdown with the host), before to shutdown, the guest install the updates. It could be a problem if the UPS has no more power to supply the host, because the guests power off during the updates.
Many thanks in advance for your help.
Best regards,
Jerome.