Dell PowerEdge T310 Spécifications Page 22

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Dell
PowerEdge T310 Technical Guide
22
5.7 Acoustics
The acoustical design of the PowerEdge T310 reflects the following:
• Adherence to Dell’s high standards for sound quality: Sound quality is different from sound
power level and sound pressure level in that it describes how humans respond to annoyances
in sound, like whistles and hums. One of the sound quality metrics in the Dell specification is
prominence ratio of a tone, which is listed in Table 10.
• Hardware configurations affect system noise levels: Dell‗s thermal control provides for
cooling flexible to varying hardware configurations. Acoustical performances associated with
two common configurations are listed in Table 10.
• Quiet office acoustics: Compare the values for LpA in Table 10 and note that, with typical
configuration, the noise level is lower than ambient measurements of typical office
environments.
• Noise ramp and descent at Boot-up: Fan speeds (hence noise levels) ramp up during the boot
process to add a layer of protection for component cooling (in the case that the system does
not boot properly).
• Acoustical Specification Terminology:
o Standby: AC Power is connected to power supplies but the system is not turned on.
o Idle: Reference ISO7779 (1999) definition 3.1.7; system is running in its OS but no
other specific activity.
o Stressed Processor: An operating mode per ISO7779 (1999) definition 3.1.6; Memory
Bandwidth is used.
o LwA–UL: The upper limit sound power level (LwA) calculated per section 4.4.2 of ISO
9296 (1988) and measured in accordance to ISO 7779 (1999).
Table 10. Acoustical Specification
Typical Configuration @ 23°C Ambient
Operating
Mode
LwA-UL
(bels)
Prominent
Tones
Processor
DIMM
Hard
Drives
Power
Supply
RAID Card
Intel Qual
Core Xeon
X3430
(2.4GHz)
4 x 1GB
(1066MT/s
UDIMM)
4 x 3.5‖
SATA
(7.2K)
500 GB
1 x 375W
Cabled PSU
None
Standby
2.7
N/A
Idle
4.4
N/A
Stressed
Processor
4.4
N/A
Maximum Configuration @ 23°C Ambient
Operating
Mode
LwA-UL
(bels)
Prominent
Tones
Processor
DIMM
Hard
Drives
Power
Supply
RAID Card
Intel Qual
Core Xeon
X3430
(2.66GHz)
4 x 8GB
(1333MT/s
RDIMM)
4 x 3.5‖
SAS
(15K)
450 GB
2 x 400W
Redundant
PSU
PERC 6i
Standby
2.7
None
Idle
5.4
None
Stressed
Processor
5.4
None
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