It depends on a whole bunch of factors. My first question to you is this: What is your disaster recovery plan (DR) regarding such a scenario? Did you plan, re

It depends on a whole bunch of factors. My first question to you is this: What is your disaster recovery plan (DR) regarding such a scenario? Did you plan, research, document and test such likely scenarios to establish user expectations and timings during an outage? If you didn't have a proven DR plan in place in this day and age then fire you CTO/CIO. So the final answer to your question without knowing all the details is ... It depends!