Acoustics; Table 4. Acoustical Performance Of M1000E Chassis With Four M915 Blades Installed - Dell PowerEdge M915 Technical Manual

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5.6 Acoustics

Table 4 shows the acoustical performance for a typical configuration of the M1000e chassis with four
PowerEdge M915 blade servers installed. Acoustical performance varies with hardware
configurations.
Table 4. Acoustical Performance of M1000e Chassis with Four M915 Blades Installed
Typical Configuration (per blade) @ 23±2°C
Processors
4 x AMD
6174
(115W)
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.
Processor Active: An operating mode per ISO7779 (1999) definition 3.1.6; a program is run to
simulate utilization of processor in general applications.
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 M915 Technical Guide
Ambient in M1000e Chassis
Hard
DIMMs
Drives
2 x 2.5‖
SAS (15K) 8 x 8GB
146GB
Operating
Mode
Mezzanine
Cards
Standby
Idle
4
Processor
Active
LwA-UL
(bels)
7.1
8.4
8.4
22