Table 9. Acoustical Performance (2.5‖ Hard Drive System); Table 10. Acoustical Performance (3.5‖ Hard Drive System) - Dell PowerEdge T710 Technical Manual

Dell

Hardware configurations affect system noise levels: Dell's advanced thermal control
provides for optimized cooling with varying hardware configurations. Some less-intuitive but
potentially important decision-making configuration examples are listed in the tables below.

Noise ramp and descent at boot: Fan speeds, and therefore noise levels, ramp during the
boot process in order to add a layer of protection for component cooling in the event that the
system were not to boot properly.
Table 9.
Typical Configuration @ 23 ± 2 °C
Hard
Processors
Drives
®
2 x Intel
5 x SAS
E5530
(15K)
(80W)
Table 10.
Typical Configuration @ 23 ± 2 °C
Hard
Processors
Drives
2 x Intel
5 x SAS
E5530
(15K)
(80W)
Definitions
Standby: AC Power is connected to Power Supply Units but system is not turned on.
Idle: Reference ISO7779 (1999) definition 3.1.7; system is running in its OS but no other specific
activity.
Active Hard Drives:
9th ed. (2005) is followed in exercising the hard disk drives.
Stressed Processor:
SPECPower_ssj2008 is utilized to stress the processors. SPECPower is set to 50% loading.
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).
LpA: The average bystander position A-weighted sound pressure level calculated per section 4.3 of
ISO9296 (1988) and measured in accordance with ISO7779 (1999). The system is placed in a rack with
its bottom at 25-cm from the floor.
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 rack with its bottom at 75-cm from the floor.
The acoustic transducer is at front bystander position, ref ISO7779 3rd (2010), Section 8.6.2.
PowerEdge T710 Technical Guide
Acoustical Performance (2.5‖ Hard Drive System)
Power RAID
Supplies Card
1 x
2 x
PERC
1100W
6/i
Acoustical Performance (3.5‖ Hard Drive System)
Power Optica
Supplies l Drive
1 x
2 x
PERC
1100W
6/i
An operating mode per ISO7779 (1999) definition 3.1.6; Section C.9 of ECMA-74
An operating mode per ISO7779 (1999) definition 3.1.6. The software
L
WA
Operating Mode
(Bels)
Idle 5.7
Standby 2.7
Active Hard Drives 5.7
L
Operating Mode
(Bels)
Idle 5.9
Standby 2.7
Active Hard Drives 6.0
-UL L
Prominent
pA
Tones
(dBA)
38 None
13 None
39 None
-UL L
Prominent
WA pA
Tones
(dBA)
40 None
13 None
42 None
24