Specifications

Table 17 details the acoustical performance for the R520.
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
2
6 x 2.5“
600GB
SAS
(10K)
2 x
750W
6 x 4GB
1333Hz
1 x Dual
Port 1GbE
NIC
1 x PERC
H710 mini
Idle
4
5.4
34
None
Stress
5
5.4
34
None
Maximum
2
8 x 3.5“
600GB
SAS
(15K)
2 x
750W
12 x
32GB
1333Hz
2 x Quad
Port 1GbE
NIC
1 x FC8
1 x PERC
H710P mini
1 x PERC
H810
Idle
4
5.8
39
None
Stress
5
5.9
41
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 A-weighted sound pressure level at front bystander position measured by binaural head in accordance with ISO7779
(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
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.