Dell PowerEdge R620 Technical Manual page 35

Table 23 details the acoustical performance for the R620.
Configuration
(23 ± 2°C CPUs
ambient)
Minimum 1
Typical 2
1
L -UL is the upper limit sound power levels (L
WA
accordance to ISO 7779 (2010).
2
L is the average A-weighted sound pressure level from the four bystander positions calculated per section 4.3 of
pA
ISO9296 (1988) and measured in accordance with ISO 7779 (2010). The system is placed in a half rack enclosure (base of
system is 25 cm above reflective 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 in a half rack enclosure (base of system is 75 cm above reflective floor) and acoustic
transducer 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% loading is
activated to stress the processors.
For more information on Dell's acoustical design, see the
Power
Hard
supply Memory
drives
unit
1 x
250G
1 x 2GB
1 x
B
495W
1333Hz
SATA
(7.2K)
4 x
8 x 8GB
300G 2 x
B SAS 750W
1600Hz
(10K)
) calculated per section 4.4.1 of ISO 9296 (1988) and measured in
WA
PCI
Operating
card/HDD
mode
controller
4
Idle
1 x PERC
H310
5
Stress
1 x PERC
4
Idle
H710
1 x GbE
5
Stress
NIC
Dell Enterprise Acoustics
1 2
L -UL L
Prominent
WA pA
tones
(bels) (dBA)
3.9 24 None
3.9 24 None
4.4 31 None
5.1 39 None
white paper.
3