Dell External OEMR R810 Technical Manual

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Contents

Dell External OEMR R810 Technical Manual Manual pdf 24 page image

DellDell PowerEdge R810 Technical Guide 23 Custom-designed heat sinks maintain CPU, IOH, and chip temperatures within thermal designtargets Highly Optimized Fan Control Algorithmo Base fan speeds are a function of hardware configuration and ambient temperature tominimize airflow for a given environmento Closed-loop PID control algorithms are used for both CPU and DIMMs to maintainappropriate thermal margino Double refresh switching allows for DIMM temperature excursions up to 95°C whilemaintaining performance and thermal design targets The R810 thermal algorithm monitors the thermal sensor on each DIMM tomaintain DIMM temperatures below the typical 85°C specification in normaloperating conditions. Under extreme operating conditions the thermal algorithm can switch theDIMMs into Double Refresh mode allowing an additional 10°C of thermalheadroom. In Double Refresh mode DIMMs are allowed to operate as high as95°C.5.7.2 113BAcousticalThe acoustical design of the PowerEdge R810 reflects the following: Adherence to Dell’s high sound quality standards. Sound quality is different from soundpower level and sound pressure level in that it describes how humans respond to annoyancesin sound, like whistles, hums, etc. One of the sound quality metrics in the Dell specificationis prominence ratio of a tone, and this is listed in the table below. Noise ramp and descent at bootup. Fan speeds, hence noise levels, ramp during the bootprocess in order to add a layer of protection for component cooling in the case that thesystem were not to boot properly. Noise levels vs. configurations. Hardware configurations have a limited effect on systemnoise levels. This server is slightly quieter when populating only two processor sockets.Table 5. Comparison of acoustical performance for 2 vs. 4 socketconfigurations2 Socket Configuration @ 23 ± 2 °C OperatingModeLWA-UL(Bels)LpA(dBA)ProminentTonesCPU HDD RAID DIMM2x E7540 4x 15 krpmSASPERCH8008x2GBDDR3standby 2.8 14 NoneIdle 6.2 43 NoneSPEC 50% 6.2 44 None4 Socket Configuration @ 23 ± 2 °C OperatingModeLWA-UL(Bels)LpA(dBA)ProminentTonesCPU HDD RAID DIMM4x E7540 4x 15 krpmSASPERCH8008x2GBDDR3Standby 2.9 15 NoneIdle 6.4 47 NoneSPEC 50% 6.3 47 NoneUDefinition:Standby: AC Power is connected to Power Supply Units but system is not turned on.