Dell PowerEdge R420 Technical Guide - Page 30

Dell Enterprise Acoustics, Table 18., Acoustical performance - weight

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Table 18 details the acoustical performance for the R420. Table 18. Acoustical performance Configuration (23 ± 2°C CPUs ambient) Hard drives Power supply unit Memory PCI card/HDD controller Operating mode LWA-UL1 (bels) LpA2 (dBA) Prominent tones3 Typical x4 hot-plug HDD chassis 2 (95W) 3 x 3.5" 300GB SAS (15K) 2 x 550W 6 x 4GB 1333Hz 1 x Dual Port 1GbE NIC 1 x PERC Idle4 Stress5 5.1 5.1 32 33 None None H310 mini Feature rich X8 hot-plug HDD chassis 2 (95W) 6 x 2.5" 300GB SAS (15K) 2 x 550W 8 x 8GB 1600Hz 1 x Quad Port 10GbE NIC 1 x PERC Idle4 Stress5 5.2 5.5 32 33 None None H710 mini 1LWA- UL is the upper limit sound power levels (LWA) calculated per section 4.4.1 of ISO 9296 (1988) and measured in accordance to ISO 7779 (2010). 2LpA is the average bystander position A- weighted sound pressure level calculated per section 4.3 of ISO 9296 (1988) and measured in accordance with ISO 7779 (2010). The system is placed within a rack enclosure (base of system is 75 cm above floor). 3Prominent tone: Criteria of D.6 and D.11 of ECMA- 74 11th ed. (2010) are followed to determine if discrete tones are prominent. The system is placed inside rack in 75 cm height and acoustic transducer, binaural head, is at front bystander position, ref ISO 7779 (2010) Section 8.6.2. 4Idle: Reference ISO 7779 (2010) definition 3.1.7; system is running in its operating system but no other specific activity. 5Stress: An operating mode per ISO 7779 (2010) definition 3.1.6. The software SPECPower at 50% is activated to stress the processors and DIMM. For more information on Dell's acoustical design, see the Dell Enterprise Acoustics white paper. 30 PowerEdge R420 Technical Guide

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30
PowerEdge R420 Technical Guide
Table 18 details the acoustical performance for the R420.
Table 18.
Acoustical performance
Configuration
(23 ± 2°C
ambient)
CPUs
Hard
drives
Power
supply
unit
Memory
PCI
card/HDD
controller
Operating
mode
L
WA
-UL
1
(bels)
L
pA
2
(dBA)
Prominent
tones
3
Typical
x4 hot-plug
HDD chassis
2
(95W)
3 x 3.5“
300GB
SAS
(15K)
2 x
550W
6 x 4GB
1333Hz
1 x Dual
Port 1GbE
NIC
1 x PERC
H310 mini
Idle
4
5.1
32
None
Stress
5
5.1
33
None
Feature rich
X8 hot-plug
HDD chassis
2
(95W)
6 x 2.5“
300GB
SAS
(15K)
2 x
550W
8 x 8GB
1600Hz
1 x Quad
Port 10GbE
NIC
1 x PERC
H710 mini
Idle
4
5.2
32
None
Stress
5
5.5
33
None
1
L
WA
-UL is the upper limit sound power levels (L
WA
) calculated per section 4.4.1 of ISO 9296 (1988) and measured in
accordance to ISO 7779 (2010).
2
L
pA
is the average bystander position A- weighted sound pressure level calculated per section 4.3 of ISO 9296 (1988) and
measured in accordance with ISO 7779 (2010). The system is placed within a rack enclosure (base of system is 75 cm
above floor).
3
Prominent tone: Criteria of D.6 and D.11 of ECMA- 74 11th ed. (2010) are followed to determine if discrete tones are
prominent. The system is placed inside rack in 75 cm height and acoustic transducer, binaural head, is at front bystander
position, ref ISO 7779 (2010) Section 8.6.2.
4
Idle: Reference ISO 7779 (2010) definition 3.1.7; system is running in its operating system but no other specific activity.
5
Stress: An operating mode per ISO 7779 (2010) definition 3.1.6. The software SPECPower at 50% is activated to stress the
processors and DIMM.
For more information on Dell’s acoustical design, see the
Dell Enterprise Acoustics
white paper.