Acoustical Specifications - Dell PowerEdge R820 Technical Manual

Technical guide

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Table Of Contents

Table of Contents

Dell



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 7.



Quiet office acoustics: Compare the values for LpA in Table 6 and note that they are lower

than ambient measurements of typical office environments. The minimal configuration of the

T110 II shown in Table 6 (LpA ~27 dBA, which is similar to a quiet bedroom) would be

inaudible in most 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).

Minimum Configuration @ 23°C Ambient

Hard

Processor

Drives

2 x 3.5‖

Intel

SATA

(65W)

(7.2K)

500GB

Typical Configuration @ 23°C Ambient

Hard

Processor

Drives

Intel Xeon

4 x 3.5‖

E3-1200

SATA

product

(7.2K)

family

1TB

(80W)

Definitions

Standby: AC Power is connected to power supplies but the 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: An operating mode per ISO7779 (1999) definition 3.1.6; Section C.9 of ECMA-74

9th ed. (2005) is followed in exercising the hard disk drives.

Stressed Processor: An operating mode per ISO7779 (1999) definition 3.1.6; SPECPower set to 50%

loading is used.

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).

PowerEdge T110 II Technical Guide

Table 7.

Power

Tape Drives

Supply

1 x

None

305W

Power

Tape Drives

Supply

1 x Dell™

1 x

PowerVault™

250W

RD1000