Users Guide

NOTE: T1/T2/.../Tn is the time period (in hours) at a certain flat rate.

NOTE: By default, the Cost column displays 0. You must configure the cost rate to see the cost.

The rate is a global setting, and can be set on the Settings → Monitoring page.

NOTE: The Energy Consumption Cost section displays information based on the values

configured in the Settings screen. This information should be used as an estimate only.

NOTE: When a device or group is newly-added or created in Power Center, the power and

energy consumption data displayed in the "1W" and "1M" time windows are different if the

monitored time is less than 1 week, and the data displayed in the "1H" and "1D" time windows are

different if the monitored time is less than 1 day. This occurs because Power Center uses

different sampling intervals for different time windows. For example, a device is added into

Power Center at 2011-10-15 09:00, and the current time is 2011-10-17 11:10. For the 1M time

window (sampling interval is 1 day), the power and energy consumption is calculated from

2011-09-17 00:00 to 2011-10-17 00:00. For the 1W time window (sampling time is 1 hour), the

power and energy consumption is calculated from 2011-10-10 11:00 to 2011-10-17 11:00. There

is an 11 hour gap; therefore, the data displayed in the two time windows are not the same.

Viewing a power history graph

Dell OpenManage Power Center provides a visual representation of the temperature history of the system

devices.

1. In the left pane, click Devices → All Devices or Devices → Managed Group.

2. From the list of devices, select a device.

The details of the device are displayed in the Summary section.

3. In the Details section, click the Thresholds tab.

Alternately, you can also click Power History in the Summary tab.

4. Click View History next to Power Alert Thresholds.

The power history graph is displayed in a new window.

5. Select the time period and attributes displayed:

a. To select the time period represented in the graph, click the buttons along the top of the graph.

b. To add or delete attributes, select from the listed options; click the option to toggle its addition or

removal from the graph:

• Minimum

• Maximum

• Average

• Power Policy

• Upper Warning

• Upper Critical

NOTE: To view specific numbers related to each attribute displayed in any section of the graph,

move the pointer over the graph.

6. To move along the data stream over time, click the navigation arrows below the graph.

Viewing system airflow graph

iDRAC provides an accurate calculation of the server’s cubic feet per minute (CFM) value. The CFM value

is a measure of the net system airflow to the servers. This value is helpful for the Power Thermal Aware