IBM 8677 - BladeCenter Rack-mountable - Power..., Планирование и руководство по установке

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and attachment of a local monitor, keyboard, and mouse to the management
module.
Noise considerations
Each BladeCenter unit has two blowers for cooling. An optional Acoustics Module is
available that dampens the noise generated by the blowers. Table 3 shows the
maximum sound levels emitted by BladeCenter units without the Acoustics Module
and with the Acoustics Module. This represents the minimum and maximum number
of BladeCenter units that can be installed in a 42U rack.
Table 3. BladeCenter noise emissions
Number of
BladeCenter units
per rack
Maximum sound
power idle
Maximum sound
power operating
Without Acoustics
Module
1 7.4 bels 7.4 bels
With Acoustics
Module
1 6.9 bels 6.9 bels
Without Acoustics
Module
4 8 bels 8 bels
With Acoustics
Module
4 7.5 bels 7.5 bels
Without Acoustics
Module
6 8.2 bels 8.2 bels
With Acoustics
Module
6 7.7 bels 7.7 bels
NetBay
Rack C
3438 mm
135.35”
3850 mm
151.57”
914 mm
35.98”
1524 mm
60.00”
NetBay
Rack B NetBay
Rack A
Front
Figure 9. Operational clearances for NetBAY 42 Enterprise rack
42
BladeCenter Type 8677: Planning and Installation Guide