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# Monitor data center temperature

The Data Centers resource provides a visualization of the racks in your data center and displays their peak temperature using a color-coded system. To enable this, you must first specify the physical positions of your racks and the position of the components in them using the Data Centers resource.

You can use temperature visualization to identify over-cooled areas of your data center. You can close vent tiles in areas that have low peak temperatures to increase airflow to areas that have insufficient cooling. If the entire data center is over-cooled, you can raise the temperature to save on cooling costs.

Temperature collection and visualization details

- The visualization displays peak rack temperature using a color-coded system. The rack is colored based on the highest peak temperature (over the last 24 hours) of the device in the rack with the highest peak temperature recorded (of devices which support ambient temperature history reporting).

- Temperatures are determined using the temperature utilization data collected from each device.

- Background data collection occurs at least once a day, so the reported peak temperature for a rack will be within the past 48 hours.

- Racks without an observed peak temperature with 48 hours are depicted without color coding (gray).

3D data center visualization

Prerequisites

- Required privileges: Infrastructure administrator or Server administrator.

- You have created a data center and positioned your racks in it. See Add a data center and Procedure: Changing the layout of a data center to learn more.

- The placement of racks in your data center accurately depicts their physical locations.

- You have specified a thermal limit for your rack using the Racks screen, if your policy dictates a limit (optional).

Viewing the peak temperature of racks in a data center

1. From the main menu, select Data Centers.

2. In the master pane, select the data center you want to view and scroll to the Layout pane.

   The racks are color-coded to depict their peak temperatures in the last 24 hours. See the Layout section of Data Centers screen details to learn more.

3. To view the peak temperature of a rack in the last 24 hours, hover your pointer over the rack.

   A tooltip menu opens, displaying the peak temperature for the last 24 hours and when it occurred.

4. Click a rack or click the view details link on the rack tooltip menu to view color-coded visualizations of the devices in the rack.

See also

- About data centers

- Data Centers (top of chapter)

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