Dell PowerEdge 2450 Specifications download pdf (Page 28)

28 PowerEdge M520 Technical Guide

 Environmental specifications: The optimized thermal management makes the PowerEdge M520

reliable under a wide range of operating environments as shown in Table 23. When operating

above 30°C ambient, performance impacts may be seen. For more information see the

Dell

PowerEdge M520 Systems Owner's Manual

on Dell.com/Support/Manuals.

Acoustical performance

The acoustical performance of the PowerEdge M520 is reflected in Table 15. The addition of some

components can cause an increase in fan speed and acoustical output. Contributors to acoustical

output can include:

 The system thermal profile selected in BIOS (for example, power- or performance- optimized

DAPC)

 Number of installed processors

 Population of modular, non-homogenous modular deployment

 Impedance of blanks

Table 15. M520 acoustical performance

Minimum

1 x 80W

(4 core)

1 x

SATA

(7.2K)

4 x

2GB

Onboard

SATA

None

Any

mezzanine

card

Standby

6.7

Idle

7.2

Typical

2 x 95W

(8 core)

2 x SAS

(10K)

8 x

4GB

PERC H310

(mini)

1Gb

Any

mezzanine

card

Standby

6.8

Idle

7.2

-UL is the upper limit sound power levels (L

) calculated per section 4.4.1 of ISO 9296 (1988) and measured in

accordance to ISO 7779 (2010).

is the averaged A-weighted sound pressure level of four bystanders in accordance with ISO 7779 (2010) Section

8.6.2. The system is placed inside 42U rack in 25 cm height.

Standby: AC power is connected to power supply units but the system is not turned on.

Idle: Reference ISO 7779 (2010) definition 3.1.7; system is running in its operating system but no other specific activity.

Configuration

(23 ± 2°C

ambient)

CPUs

Hard

drives

DIMMs

HDD

controller

NDC

PCI cards

Operating

mode

-UL

(bels)

(dBA)

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