Table 18. Acoustical Performance - Dell PowerEdge R820 Technical Manual

Table 18 details the acoustical performance for the R820.
Configuration
(23 ± 2°C CPUs
ambient)
Typical 4
Feature rich 4
1
L -UL is the upper limit sound power levels (L
WA
accordance to ISO 7779 (2010).
2
L is A-weighted sound pressure level at front bystander position measured by binaural head in accordance with ISO7779
pA
(2010) Section 8.6.2. The system is placed inside rack in 75 cm height.
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 ISO7779 (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
Stressed processor: 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
32 PowerEdge R820 Technical Guide
Table 18. Acoustical performance
Power
Hard
supply Memory
drives
unit
8 x
32 x
300GB 2 x
8GB
SAS 1100W
1600Hz
(10K)
12 x
32 x
300GB 2 x
8GB
SAS 1100W
1600Hz
(10K)
) calculated per section 4.4.1 of ISO 9296 (1988) and measured in
WA
PCI
Operating
card/HDD
mode
controller
2 x 1GbE
4
Idle
NIC
2 x FC8
1 x PERC
5
Stress
H710
1 x H810
2 x 1GbE
4
Idle
NIC
2 x FC8
1 x PERC
5
Stress
H710
1 x H810
Dell Enterprise Acoustics
1 2
L -UL L
Prominent
WA pA
tones
(bels) (dBA)
5.5 39 None
6.1 48 None
5.6 40 None
6.2 49 None
white paper.
3