The SNIA Emerald Program Power Efficiency Measurement Specification, is a storage specification developed and maintained by the Storage Networking Industry Association (SNIA) and cross-referenced by the Environmental Protection Agency’s EnergyStar program. The specification consists of a storage types taxonomy, system under test workload and energy measurement method, measured metrics for active and idle operational states, and presence tests for capacity optimization technologies. The measured metric data is generated through the use of well-defined standard testing and data reduction procedures prescribed in the SNIA Emerald Specification. This data quantifies storage system power efficiency for typical types of enterprise datacenter workloads and helps IT professionals make storage platform selections as part of an overall Green IT and sustainability objective.
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SNIA's ongoing collaboration with the EPA has helped to shape the Energy Star Data Center Storage (DCS) Specification. The EPA DCS specification cross-references the SNIA Emerald Specification as the test and measurement methodology.