DellPowerEdge R510 Technical Guide 36Figure 29. Acoustics of 4-HDD ChassisTypical Configuration @ 23 ± 2 °C OperatingModeL WA-UL(Bels)L pA(dBA)PROMINENTTONESCPU HDD RAID DIMM2 x IntelE5506/2.13GHz2 x 146GB SAS(3.5”/ 7200RPM)1 xPERCS3004 x 2GBUDIMMStandby 2.7 16 NoneIdle 5.4 40 NoneStress 5.4 40 NoneMax. Configuration @ 23 ± 2 °C OperatingModeL WA-UL(Bels)L pA(dBA)PROMINENTTONESCPU HDD RAID DIMM2 x IntelX5570/2.80GHz4 x 600GB SAS(3.5”/ 15k RPM)1 xPERC6/i(H700)8 x 4GBRDIMMStandby 2.7 17 NoneIdle 5.8 42 NoneStress 5.9 43 NoneFigure 30. Acoustics of 8-HDD ChassisTypical Configuration @ 23 ± 2 °C OperatingModeL WA-UL(Bels)L pA(dBA)PROMINENTTONESCPU HDD RAID DIMM2 x IntelE5506/2.13GHz4 x 500 GB Hot-plug SATA (3.5”/7200 RPM)1 x SAS6i/R6 x 2GBUDIMMStandby 3.0 18 NoneIdle 5.6 42 NoneStress 5.6 42 NoneMax. Configuration @ 23 ± 2 °C OperatingModeL WA-UL(Bels)L pA(dBA)PROMINENTTONESCPU HDD RAID DIMM2 x IntelX5570/2.80GHz8 x 600GB SAS(3.5”/ 15k RPM)1 xPERC6/i(H700)8 x 8GBRDIMMStandby 3.0 18 NoneIdle 5.8 42 NoneStress 5.9 44 NoneStandby: AC Power is connected to Power Supply Units but system is not turned on.DefinitionsIdle: Reference ISO7779 (1999) definition 3.1.7; system is running in its OS but no other specific activity.Stressed Processor: An operating mode per ISO7779 (1999) definition 3.1.6. The software MemBW4 is activated tostress the processors.LwA – UL: The upper limit sound power level (LwA) calculated per Section 4.4.2 of ISO 9296 (1988) and measured inaccordance to ISO 7779 (1999).LpA: A-Weighted sound pressure level. The system is placed in a rack with its bottom at 75 cm from the floor. The acoustictransducer is at front bystander position, ref ISO7779 (1999) Section 8.6.2.Prominent tone: Criteria of D.5 and D.8 of ECMA-74 9th ed. (2005) are followed to determine if discrete tones areprominent. The system is placed in a rack with its bottom at 75 cm from the floor. The acoustic transducer is at frontbystander position, ref ISO7779 (1999) Section 8.6.2.