DRaaS services are described as one of two types. In the first, the service provider is responsible for managing VM replication, VM activation, exercise management and servicing customer disaster declarations. In the second, the provider role is relegated to just VM activation and shutdown, and the service customer is responsible for managing replication, exercise management and recovery operations following a disaster declaration. DRaaS service providers may also support one or more of the following: communication services, DR/BC recovery services, hosting and IaaS and direct cloud recovery. DRaaS emerged to address the need of IT organizations — which did not have the required staffing and/or secondary center facility — to support increasingly aggressive recovery-time targets. The growth of DRaaS was also facilitated by the increased use of, and IT buyer comfort with, public cloud services for production applications.
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