Specifications
2.5.
Environmental Specifications
2.5.1. Shock and Vibration
All shock and vibration specifications apply to the mounting and orientation conditions
described in section 2.3. Orientation axes are defined in Figure 2-4.
Shock
Operating
Non-operating
Non-operating Rotational Shock
Note: Half-sine wave of 3 ms duration without non-recoverable errors.
Vibration
Operating
Non-operating
Sweep Rate
Operating Shock
WD Enterprise drives are tested by applying a linear shock in each axis, one axis at a
time, at a rate not exceeding two shocks per second.
The drive incurs no physical damage and no hard errors while subjected to intermittent
shock not exceeding the level listed in Table 2-10. Operating performance may degrade
during periods of shock application.
Non-operating Shock
WD Enterprise drives are tested by applying a linear shock in each axis, one axis at a
time. A maximum of three shocks per axis is applied.
The drive incurs no physical damage when subjected to non-repetitive shocks not
exceeding the level listed in Table 2-10.
Non-operating Rotational Shock
WD Enterprise drives are tested by applying a rotational shock in each direction, about
each axis, one axis at a time.
The drive incurs no physical damage when subjected to rotational shocks not exceeding
the level listed in Table 2-10.
14
Table 2-10. Shock and Vibration
10G (2 per second maximum)
70G (3 drops per axis maximum)
10,000 rad/s
5-20 Hz, 0.037 inch (peak to peak)
20-400 Hz, 0.75G (0 to peak)
5-20 Hz, 0.098 inch (peak to peak)
20-400 Hz, 2.0G (0 to peak)
One octave per minute (minimum)
RELEASED 04-08-97
WD Enterprise WDE2170/WDE4360
2
4079-001045 Rev. B