Generator fuel storage for a cloud datacenter should last for how long, at a minimum?

The minimum recommendation for generator fuel storage at a cloud data center is typically around 12 hours. This duration allows for adequate backup power in case of extended utility outages while ensuring that the data center can maintain operations during emergencies. Storing fuel for at least 12 hours ensures that the facility can sustain critical functions and services until either the utility power is restored or additional fuel can be procured and delivered to the site.

This standard is particularly relevant for environments that require high availability and cannot afford downtime. It also reflects realistic scenarios where power restoration may take time, as opposed to extremely short durations that would not support operational continuity, like 10 minutes, or indefinite durations which are impractical and costly to maintain. Additionally, a three-day supply of fuel might be preferable in some contexts, but it exceeds the minimum necessary requirement, which is why 12 hours is often cited as the baseline.