1. A computer-implemented method of formulating an integrated disaster recovery (DR) plan based upon a plurality of DR requirements for an application, the method comprising: receiving a first set of one or more inputs identifying an entity type for which the plan is to be formulated, wherein the entity type comprises an enterprise, one or more sites of the enterprise, the application, a particular data type for the application, or any combination thereof; based upon the received entity type, identifying at least one data container representing a subset of data for an application; for each identified data container, receiving a second set of one or more inputs each identifying a disaster type for which the plan is to be formulated; for each disaster type, receiving a third set of one or more inputs each identifying a DR requirement for the application as a category of DR Quality of Service (QoS) class to be applied to the disaster type; utilizing the third set of one or more inputs to generate a composition model specifying each of one or more respective DR QoS parameters as a function of a corresponding set of one or more QoS parameters representative of a replication technology solution; and formulating the replication technology solution using the composition model.