Which of the following backup sites takes the longest recovery time?

A cold site provides only basic infrastructure such as power, cooling, and connectivity - no pre-installed hardware, software, or replicated data is present. Because all equipment must be sourced, installed, configured, and loaded with data after the disaster declaration, the recovery time objective (RTO) is the longest of all site types, often ranging from days to several weeks.

A hot site is a fully operational mirror of the production environment with current hardware, software, and near-real-time data, enabling recovery in minutes to hours - the shortest recovery time.

A warm site has partially configured hardware and installed software but lacks current data, requiring a moderate amount of setup and restoration that falls between hot and cold site recovery times.

A mobile backup site uses pre-configured portable equipment that can be transported and deployed quickly, offering a faster recovery time than a cold site because infrastructure is already set up.