The present invention is an optical splitter module comprising couplers, which have one or more optical connectors attached thereto. A grease containment apparatus arranged to receive grease discharged by a fan-type rooftop grease exhauster may include multiple corner sections and at least one trough disposed between the sumps, and arranged on at least one sides of a rooftop grease exhauster. Each tier reduces the size of data by orders of magnitude through pre-aggregation. The method can be integrated transparently into the IGMP and the RFC 1112 standard that governs multicast transmission of data packets. The user can then indicate a desire to transmit the selected option. A stream enabled application executing in a virtual execution environment may use the blocks when needed.