Table 18. Acoustical Performance - Dell PowerEdge T320 Technical Manual

Noise ramp and descent during bootup from power off: Fan speed noise levels ramp during the

boot process (from power off to power on) to add a layer of protection for component cooling
in case the system does not boot properly. To keep the bootup process as quiet as possible, the
fan speed reached during bootup is limited to about half of full speed.
Table 18 details the acoustical performance for the T320.
Configuration
(23 ± 2°C CPU
ambient)
Typical 1
Feature rich 1
1
L -UL is the upper limit sound power levels (L
WA
accordance to ISO 7779 (2010).
2
L is the average bystander position A-weighted sound pressure level calculated per section 4.3 of ISO 9296 (1988) and
pA
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 in center of ISO 7779 table and binaural head is at front operator position, reference ISO
7779 (2010) Section 8.6.1, position P4.
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 MemBW4 is activated to stress the
processors.
For more information on Dell's acoustical design, see the
31 PowerEdge T320 Technical Guide
Table 18.
Acoustical performance
Power
Hard
supply Memory
drives
unit
4 x 3.5"
2 x
SATA 4 x 4GB
495W
(7.2K)
8 x 2.5"
2 x
SAS 6 x 8GB
750W
(10K)
) calculated per section 4.4.1 of ISO 9296 (1988) and measured in
WA
PCI
Operating
card/HDD
mode
controller
1 x 10Gb
4
Idle
NIC
1 x PERC
5
Stress
H310
1 x 10Gb
NIC
4
Idle
1 x 1Gb NIC
1 x PERC
H310
1 x 225W
5
Stress
GPU
Dell Enterprise Acoustics
1 2
L -UL L
Prominent
WA pA
tones
(bels) (dBA)
3.8 30
None
3.8 31
4.9 38
Yes, by hard
drive at
stress
4.9 38
white paper.
3