Notes:
1. LWAd is the statistical upper-limit A-weighted sound-power level (rounded to
the nearest 0.1 B).
2. LpAm is the mean A-weighted emission sound-pressure level that is measured
at the 1-meter bystander positions (rounded to the nearest dB).
3. 10 dB (decibel) = 1 B (bel)
Table 29. Acoustic declaration
Declared A-weighted sound
power level, LWAd (B)
Declared A-weighted sound
pressure level, LpAm (dB)
Operating 7.5 58
Idle 7.5 58
Note: Government regulations (such as those prescribed by OSHA or European
Community Directives) may govern noise level exposure in the workplace and
may apply to you and your server installation. The actual sound pressure levels in
your installation depend upon a variety of factors, including the number of racks
in the installation; the size, materials, and configuration of the room; the noise
levels from other equipment; the room ambient temperature, and employees'
location in relation to the equipment. Further, compliance with such government
regulations also depends upon a variety of additional factors, including the
duration of employee exposure and whether employees wear hearing protection.
IBM recommends that you consult with qualified experts in this field to determine
whether you are in compliance with the applicable regulations.
Operating vibration requirements
The vibration levels that are designed for the XIV system comply with class V1L
requirements included in the product classes for vibration.
The XIV system is designed to operate under the vibration V1L levels that are
described in the following table. More information includes random vibration PSD
profile breakpoints and operational shock levels.
Table 30. Vibration levels
Class grms g Peak Sine
V1L 0.10 0.06 @ 50 & 60 Hz
Notes:
v All values in this table are in g
2
/Hz.
v g is the peak g level of an approximate half-sine pulse.
Table 31. Random vibration PSD profile breakpoints
Class 5 Hz 17 Hz 500 Hz
V1L 2.0 x 10
-7
2.2 x 10
-5
2.2 x 10
-5
Note: All values in this table are in g
2
/Hz.
Table 32. Operational shock levels
Class Axis g
1
pw
2
1 Vertical 3.5 3.0
Chapter 6. Installation site requirements 47
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