Dell PowerEdge M820 Technical Manual

Also see for PowerEdge M820 Systems: Manual Command reference guide Owner's manual Information update Release notes

Contents

Dell PowerEdge M820 Technical Manual Manual pdf 29 page image

29 PowerEdge M820 Technical Guide Environmental specifications: The optimized thermal management makes the PowerEdgeM820 reliable under a wide range of operating environments as shown in Table 24.Acoustical performanceThe acoustical performance of the PowerEdge M820 is reflected in Table 16. The addition of somecomponents can cause an increase in fan speed and acoustical output. Contributors to acousticaloutput can include: The system thermal profile selected in BIOS (for example, Power optimized DAPC orPerformance optimized) NDC Number of installed processors Population of modular, non-homogenous modular deployment Impedance of blanksTable 16. M820 acoustical performanceConfiguration(23 ± 2°Cambient)CPUs Harddrives DIMMs HDDcontroller NDC PCI cards OperatingmodeLWA-UL1(bels)LpA2(dBA)Minimum2 x95W(6core)1 x 2.5"SATA(7.2K)2 x2GBPERC H310(mini) None Any mezz.cardStandby3 6.9 51Idle4 7.4 55Typical2 x95W(8core)2 x 2.5"SAS(10K)16 x8GBPERC H710(mini) 1Gb Any mezz.cardStandby3 6.9 52Idle4 7.3 551LWA-UL is the upper limit sound power levels (LWA) calculated per section 4.4.1 of ISO 9296 (1988) and measured inaccordance to ISO 7779 (2010).2LpA is the average A-weighted sound pressure level of four bystanders in accordance with ISO 7779 (2010) Section 8.6.2.The system is placed inside 42U rack in 25 cm height.3Standby: AC Power is connected to power supply units but the system is not turned on.4Idle: Reference ISO 7779 (2010) definition 3.1.7; system is running in its operating system but no other specific activity.Note: Stress is an operating mode per ISO 7779 (2010) definition 3.1.6. Since blade stressing applications vary widely,blade stress values are not available.