Dell PowerEdge M820 Systems 기술 매뉴얼 - 페이지 29

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Dell PowerEdge M820 Systems에 대해서도 마찬가지입니다: 정보 업데이트 (38 페이지), 릴리스 정보 (27 페이지), 사용자 설명서 (23 페이지), 중요 정보 매뉴얼 (35 페이지), 업데이트 매뉴얼 (32 페이지), 업데이트 매뉴얼 (28 페이지), 사용자 설명서 (26 페이지), 사용자 설명서 (22 페이지), 시작하기 매뉴얼 (12 페이지), 소유자 매뉴얼 (3 페이지), 기술 매뉴얼 (46 페이지), 포트폴리오 매뉴얼 (27 페이지), 시작하기 매뉴얼 (14 페이지), 시작하기 매뉴얼 (12 페이지)

페이지 인쇄



Environmental specifications: The optimized thermal management makes the PowerEdge

M820 reliable under a wide range of operating environments as shown in Table 24.

Acoustical performance

The acoustical performance of the PowerEdge M820 is reflected in Table 16. 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 optimized DAPC or

Performance optimized)



NDC



Number of installed processors



Population of modular, non-homogenous modular deployment



Impedance of blanks

Configuration

(23 ± 2°C

CPUs

ambient)

2 x

95W

Minimum

core)

2 x

95W

Typical

core)

-UL is the upper limit sound power levels (L

accordance to ISO 7779 (2010).

is the average 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.

Note: Stress is an operating mode per ISO 7779 (2010) definition 3.1.6. Since blade stressing applications vary widely,

blade stress values are not available.

PowerEdge M820 Technical Guide

Table 16.

M820 acoustical performance

Hard

HDD

DIMMs

drives

controller

1 x 2.5"

2 x

PERC H310

SATA

2GB

(mini)

(7.2K)

2 x 2.5"

16 x

PERC H710

SAS

8GB

(mini)

(10K)

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

Operating

NDC

PCI cards

mode

Standby

Any mezz.

None

card

Idle

Standby

Any mezz.

1Gb

card

Idle

-UL

(bels)

(dBA)

6.9

7.4

6.9

7.3