Disaster Recovery as a Service (DRaaS) involves replicating physical and virtual servers to a secondary location like another appliance or the cloud so that if a disaster occurs at the primary site, systems and data can be accessed from the secondary location. With DRaaS, organizations do not need to build or manage their own secondary site and it requires fewer IT resources than traditional disaster recovery. DRaaS also lowers disaster recovery costs compared to maintaining your own secondary site.