Which of the following is the BEST concept to maintain required but non-critical server availability?

A.
SaaS site

B.
Cold site

C.
Hot site

D.
Warm site

Explanation:
Warm sites provide computer systems and compatible media capabilities. If a warm site is used, administrators
and other staff will need to install and configure systems to resume operations. For most organizations, a warm
site could be a remote office, a leased facility, or another organization with which yours has a reciprocal
agreement. Another term for a warm site/reciprocal site is active/active model.