Acoustical Performance - Dell PowerEdge R910 Technical Manual

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Table Of Contents

Table of Contents

Dell

105W Configuration @ 23±2°C Ambient

Hard

Processors

Drives

4 x Intel

Xeon

4 x 15K

E7540

2.5" SAS

(105W)

130W Configuration @ 23±2°C Ambient

Hard

Processors

Drives

4 x Intel

Xeon

4 x 15K

E7540

2.5" SAS

(130W)

Definitions

Standby: AC Power is connected to power supplies but the system is not turned on.

Idle: Reference ISO7779 (2010) definition 3.1.7; system is running in its OS but no other specific

activity.

Stressed Processor:

An operating mode per ISO7779 (2010) definition 3.1.6. The software

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 (2010).

LpA:

Average bystander A-Weighted sound pressure level. The system is placed in a rack with its

bottom at 25 cm from the floor. The acoustic transducers are at the four bystander positions, ref

ISO7779 (2010) Section 8.6.2.

Prominent tones: 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.

Dell PowerEdge R910 Technical Guide