Which of the following options represents a warm site?

A warm site is characterized as a backup location that is not as fully equipped as a hot site but is more prepared than a cold site. It typically includes essential components that allow for the rapid recovery of operations. Option C correctly describes a warm site as it refers to a facility with basic IT infrastructure. This means that while the site may not have fully operational systems or all components necessary for business continuity immediately available, it possesses the necessary hardware and software setups that can be activated relatively quickly to facilitate a business recovery process.

In contrast, the other options represent different types of recovery sites but do not fit the warm site definition. A site ready for immediate use is typically indicative of a hot site, which is fully operational and prepared for immediate deployment. An empty facility with established power lacks the necessary infrastructure and systems for recovery, classifying it as a cold site. A fully equipped data center would also align with a hot site rather than a warm site, as it implies complete readiness and functionality without the delay associated with setup or configuration. Thus, basic IT infrastructure in a warm site provides the right balance for quick recovery efforts.