ITA Energy Efficiency

The Energy Efficiency Dashboard, available from the IT Advisor web client Dashboard menu, shows a graphical representation of the IT load, current PUE/DCiE, historical PUE/DCiE, costs and CO2 emission per subsystem of an energy system according to the configuration in IT Advisor: Energy Efficiency. See Energy system configuration   For information about the energy efficiency concepts used on the dashboard, such as Power Usage Effectiveness (PUE) and Data Center Infrastructure Efficiency (DCiE), go to: the Green Grid and read the White Papers:   WP-157: Selecting an Industry-Standard Metric for Data Center Efficiency WP-154: Electrical Efficiency Measurement for Data Centers WP-114: Implementing Energy Efficient Data Centers WP-113: Electrical Efficiency Modeling for Data Centers   You can use the settings below the graphs on the dashboard to define the data (for example energy system and time period) displayed in the graphs.   Open the Energy Efficiency Dashboard from the web client Dashboard menu. In the Current PUE / Current DCiE tab, use the Dial Settings option below the graphs to select the time period for which to average the measurements for the dial, and select the energy system for which you want to display the measurements. In the Historical PUE / Historical DCiE tab, use the Graph settings options to define the time period and resolution of the graph, and select the energy system for which you want to display the measurements. Resolution is measured in time and defines the detail level of the graph. Decrease the resolution if you want to increase the detail level. Increase the resolution if you want to decrease the detail level. If you are using PUE as metric, the graph shows the PUE up to 5. If the calculated PUE is greater than 5, the calculated value is displayed and the dial shows the maximum value possible (5). Before performing the next step, make sure that you have selected a country in the energy system's > Properties> General> Location. In the Subsystem Cost tab, use the Graph settings options to define the time period, kWh cost, and CO2 emission, and select the energy system for which you want to display the measurements. Click Get price and CO2 emission to have the system update the currency, cost per kWh, and CO2 per kWh fields based on your input and on the country selection in the energy system's > Properties> General> Location. If you switch between multiple energy systems, remember to click Get price and CO2 emission after selecting another energy system to get the latest data for the selected energy system.   Type customized values rather than using the standard values for the selected country, if the standard values do not apply to the configured energy system. Tip: You can toggle the metric between PUE and DCiE in > Tools > Preferences> General.   Screenshot_2022-04-28_at_14_3600379285942108.png Screenshot_2022-04-28_at_14_3600379285942152.png

You can view a graph that is published to the IT Advisor web client Power Usage Effectiveness (PUE) dashboard from Window > Dashboard > PUE/DCiE Dashboard in the ITA desktop client.   It displays the Power Usage Effectiveness (PUE), which is a measure of the ratio of the total amount of power used by the data center facility to the power used by the IT load.   Your PUE is measured as an average from midnight to midnight, giving you a Power Usage Effectiveness summary for the previous 24 hours.   ITA_PUE_dashboard_1_360007722138.png Note: You can toggle the energy efficiency metric between PUE and DCiE in Tools > Preferences > General.   Effective power usage resources   For information about energy efficiency concepts, such as Power Usage Effectiveness (PUE) and Data Center Infrastructure Efficiency (DCiE), go to the Green Grid and read the White Papers.   WP-161: Allocating Data Center Energy Costs and Carbon to IT Users WP-157: Selecting an Industry-Standard Metric for Data Center Efficiency WP-154: Electrical Efficiency Measurement for Data Centers WP-114: Implementing Energy Efficient Data Centers WP-113: Electrical Efficiency Modeling for Data Centers WP-66: Estimating a Data Center's Electrical Carbon Footprint

In the Power Dependency Editor, you can draw a diagram of the entire physical infrastructure supporting the racks, including the power connections. When you open the Power Dependency Editor, some equipment may already be shown in the upper left corner. There may be more components hidden behind the one that is visible. If the diagram is empty, you must configure the physical infrastructure with rooms and equipment first. This editor includes equipment at PDU level and upstream to the switchgear, and equipment from the PDU and downstream that supports the racks, such as cooling units and pumps. The IT load of the racks is included in the PUE/DCiE calculation as an IT Load subsystem. Infiltration, lighting, and ventilation are also included as subsystems. You can move the components one at a time from the initial position in the corner. Then you can draw power connections between the components in the diagram to configure the power dependency setup of the entire physical infrastructure. ITA_power_dependency_config_360007667737.png 123 Steps to...  Configuring power dependencies Configure the power dependencies between the equipment in the diagram to ensure the configuration accurately reflects the live physical infrastructure of your energy systems. In the Application bar, select Planning> PUE/DCiE Configuration to open the Power Dependency Editor. Drag the equipment shown in the upper left corner into any position in the diagram to reveal other pieces of equipment behind it, and continue to drag equipment from the upper left corner until all components are visible in the diagram. Tip Tip: Whenever you add new equipment to the infrastructure in > Planning> Data Center, it appears in the upper left corner of the Power Dependency Editor. To ensure you always see any new components in the diagram, move all components away from the upper left corner. If you have many components you do not want to see in the diagram, for example many cooling units you want to see as one subsystem, you can drag them on top of each other so you only see them as one. Move all the components into the appropriate position by dragging them, and resize them by pulling the corners as needed. The diagram does not show the exact position of the components, rather a line diagram representing the power connections between the components. Select the connection icon ITA power dependency config_360007667737.png in the toolbar. Click on a component you want to connect from, and click the other component you want to connect to. If you are creating a PDU downstream connection, define the breaker involved in the power connection, by name, rating, and derating values. A line now connects the two components in the diagram, with an arrow indicating the downstream power connection. Repeat the above step to continue to draw connections, until all connections in the live physical infrastructure are represented in the diagram (except for racks and rack-mounted equipment). The rack-level power connections, for example from a PDU to a rack PDU is set up in the component properties in > Planning> Data Center. At any time, right-click a component to see the properties. The components now have a power path setup, and the load is included in the power capacity calculations. They also appear in the Equipment Browser, Power Dependency pane, Inventory Report, and Audit Trail Report.

Power Usage Effectiveness (PUE) and Data Center Infrastructure Efficiency (DCiE) are commonly used metrics for determining if energy efficiency improvements should be made. PUE PUE = Total Facility Power / IT Equipment Power The range is from 1 to infinity (5 in ITA Energy Efficiency). The lower the value is, the better the efficiency is. 1 being 100% efficiency (all power used by IT equipment only). DCiE DCiE = IT Equipment Power / Total Facility Power x 100% The range is a percentage. The higher the value is, the better the efficiency is. 100% being 100% efficiency (all power used by IT equipment only). *Total Facility Power is the total power entering the data center. The measurement point is at or near the facility's utility meter. *IT Equipment Power is the power delivered to the servers (after power conversion, switching, etc.).