User Manual

Table 19. Acoustical performance of R250 acoustical configurations
Configuration Entry Economy Volume Feature rich
Acoustical Performance: Idle/ Operating @ 25°C Ambient
L
wA,m
(B) Idle 4.5 4.5 5.0 5.0
Operating 4.5 4.5 5.0 5.0
K
v
(B) Idle 0.4 0.4 0.4 0.4
Operating 0.4 0.4 0.4 0.4
L
pA,m
(dB) Idle 30 30 33 33
Operating 30 30 33 33
Prominent tones No prominent tones in Idle and Operating
Acoustical Performance: Idle @ 28°C Ambient
L
wA,m
(B) 4.5 4.5 5.0 5.0
K
v
(B) 0.4 0.4 0.4 0.4
L
pA,m
(dB) 30 30 33 33
Acoustical Performance: Max. Loading @ 35°C Ambient
L
wA,m
(B) 4.9 5.7 5.0 6.3
K
v
(B) 0.4 0.4 0.4 0.4
L
pA,m
(dB) 32 40 33 46
L
wA,m
: The declared mean A-weighted sound power level (LwA) is calculated per section 5.2 of ISO 9296 (2017) with data
collected using the methods described in ISO 7779 (2010). Data presented here may not be fully compliant with ISO 7779.
L
pA,m
: The declared mean A-weighted emission sound pressure level is at the bystander position per section 5.3 of ISO 9296
(2017) and measured using methods described in ISO 7779 (2010). The system is placed in a 24U rack enclosure, 25 cm above a
reflective floor. Data presented here may not be fully compliant with ISO 7779.
Prominent tones: Criteria of D.6 and D.11 of ECMA-74 are followed to determine if discrete tones are prominent and to report
them, if so.
Idle mode: The steady-state condition in which the server is energized but not operating any intended function.
Operating mode: The maximum of the steady state acoustical output at 50% of Processor TDP or active HDDs per C.9.3.2 in
ECMA-74 .
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Power, thermal, and acoustics