Dell Fresh Air Compliant Cooling: Monitor Server Temperature and Thresholds with iDRAC8

–You can reset the peak utilization for a particular sensor. Click Reset Historical Peak. You must have Configure privilege to reset the peak value.

•Performance Metrics section:

–View status and present reading

–View or specify the warning threshold utilization limit. You must have server configure privilege to set the threshold values.

For information about the displayed properties, see the iDRAC Online Help.

Monitoring Performance Index for of CPU, Memory, and I/O Modules Using

RACADM

Use the SystemPerfStatistics sub command to monitor performance index for CPU, memory, and I/O modules. For more information, see the iDRAC RACADM Command Line Reference Guide available at dell.com/esmmanuals.

Checking the System for Fresh Air Compliance

Fresh air cooling directly uses outside air to cool systems in the data center. Fresh air compliant systems can operate above its normal ambient operating range (temperatures up to 113 °F (45 °C)).

NOTE: Some servers or certain configurations of a server may not be fresh air compliant. See the specific server manual for details related to fresh air compliance or contact Dell for more details.

To check the system for fresh air compliance:

1.In the iDRAC Web interface, go to Overview → Server → Power / Thermal → Temperatures. The Temperatures page is displayed.

2.See the Fresh Air section that indicates whether the server is fresh air compliant or not.

Viewing Historical Temperature Data

You can monitor the percentage of time the system has operated at ambient temperature that is greater than the normally supported fresh air temperature threshold. The system board temperature sensor reading is collected over a period of time to monitor the temperature. The data collection starts when the system is first powered on after it is shipped from the factory. The data is collected and displayed for the duration when the system is powered on. You can track and store the monitored temperature for the last seven years.

NOTE: You can track the temperature history even for systems that are not fresh air compliant. However, the threshold limits and fresh air related warnings generated are based on fresh air supported limits. The limits are 42ºC for warning and 47ºC for critical. These values correspond to 40ºC and 45ºC fresh air limits with 2ºC margin for accuracy.

Two fixed temperature bands are tracked that are associated to fresh air limits:

•Warning band — Consists of the duration a system has operated above the temperature sensor warning threshold (42ºC). The system can operate in the warning band for 10% of the time for 12 months.

•Critical band — Consists of the duration a system has operated above the temperature sensor critical threshold (47ºC). The system can operate in the critical band for 1% of the time for 12 months which also increments time in the warning band.

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