We have Esxi installed on a box (maybe 2 years old). This runs 4 virtual servers. It is connected to a UPS that has about a 15 min runtime. If the power is out longer, and when we get power back, the configuration for the Esxi has to be set up again. Is there something I need to change in settings or why does it do this.
It doesn't happen very often, maybe 3 times in 2 years, but in a recent audit, we were told we should investigate further to see why it happens.
Any suggestions/ideas appreciated.