Dell PowerEdge R940 Technical Manual page 27
Latest 4-socket, 3u monolithic rack server
designed for complex workloads using highly scalable memory and network options
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Also See for PowerEdge R940:
- Installation and service manual (161 pages) ,
- Service (14 pages) ,
- Instruction (10 pages)
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iDRAC9 BIOS settings: Performance Per Watt (DAPC or OS) may be quieter than Performance or Dense Configuration (iDRAC
Settings > Thermal > Max. Exhaust Temperature or Fan speed offset).
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The quantity and type of PCIe cards installed: This affects overall system acoustics. Installation of more than two PCIe cards
results in an increase in overall system acoustics.
•
PCIe controller-based SSD drives: Drives such as Express flash drives and Fusion- IO cards require greater airflow for cooling,
and result in significantly higher noise levels.
•
Systems with an H330 PERC: This configuration may be quieter than those with an H730P PERC with battery backup.
However, higher noise levels result when a system is configured as non-RAID.
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Hot spare feature of power supply unit: In the system default setting, the Hot Spare Feature is disabled; acoustical output from
the power supplies is lowest in this setting.
Power, thermal, and acoustics
27
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