values. To reflect this situation, this standard defines two ways for presenting a TEER for a modular system: A TEER for a given family of products, based on a "representative" HW configuration (as defined by the vendor). A TEER for a specific configuration of products. The TEER value may be either a TEER or a TEER, as defined in Certified Declared [3]. For example, a vendor may get a Certified TEER for a family of products and provide a Declared TEER for a given configuration to respond to an RFP. The "representative" method will have a TEER for a fixed configuration (combination of modules). This metric can be used to compare similar products from different vendors. The "modular" method allows vendors to establish the energy consumption for each module, so EE for a desired system hardware configuration (combination of modules) can be calculated by the user. NOTE: Providing the module-level data may involve some approximation of throughput and energy usage and therefore can only serve as a guideline. TEER Metric Definition (representative) TEER is defined as a ratio of maximum demonstrated throughput (Td) to weighted power (energy consumption rate) Pw. (1) Where: Td = Maximum Demonstrated Throughput Pw = Weighted Power (Energy Consumption Rate) Weighted energy consumption is calculated with the following formula: (2) Where: Pw= Weighted Power (a, b, c) = Weighting for power at each utilization level, where a + b + c=1.0 (Pu1,Pu2, Pu3) = Power at system utilization level The traffic profile, weights (a,b,c) and system utilization levels (u1, u2, u3) vary according to
values. To reflect this situation, this standard defines two ways for presenting a TEER for a modular system: A TEER for a given family of products, based on a "representative" HW configuration (as defined by the vendor). A TEER for a specific configuration of products. The TEER value may be either a Certified TEER or a Declared TEER, as defined in [3]. For example, a vendor may get a Certified TEER for a family of products and provide a Declared TEER for a given configuration to respond to an RFP. The "representative" method will have a TEER for a fixed configuration (combination of modules). This metric can be used to compare similar products from different vendors. The "modular" method allows vendors to establish the energy consumption for each module, so EE for a desired system hardware configuration (combination of modules) can be calculated by the user. NOTE: Providing the module-level data may involve some approximation of throughput and energy usage and therefore can only serve as a guideline. TEER Metric Definition (representative) TEER is defined as a ratio of maximum demonstrated throughput (Td) to weighted power (energy consumption rate) Pw. (1) Where: Td = Maximum Demonstrated Throughput Pw = Weighted Power (Energy Consumption Rate) Weighted energy consumption is calculated with the following formula: (2) Where: Pw= Weighted Power (a, b, c) = Weighting for power at each utilization level, where a + b + c=1.0 (Pu1,Pu2, Pu3) = Power at system utilization level The traffic profile, weights (a,b,c) and system utilization levels (u1, u2, u3) vary according to