IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive, Specifications

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6.8 Vibration and Shock
All vibration and shock measurements in this section are made with the drive that has no mounting attach-
ments for the systems. The input power for the measurements is applied to the normal drive mounting
points.
6.8.1 Operating Vibration
6.8.1.1 Random Vibration
The drive is designed to operate without unrecoverable errors while being subjected to the following
vibration levels.
The measurements are carried out during 30 minutes of random vibration using the power spectral density
(PSD) levels as following.
Note: The specified levels are measured at the mounting points.
6.8.1.2 Swept Sine Vibration
The hard disk drive will meet the criteria shown below while operating in respective conditions.
No errors 0.5 G 0-peak, 5-300-5 Hz sine wave, 0.5 oct/min sweep rate
with 3 minutes dwells at 2 major resonances
No data loss 1 G 0-peak, 5-300-5 Hz sine wave, 0.5 oct/min sweep rate
with 3 minutes dwells at 2 major resonances
6.8.2 Non-Operating Vibrations
The drive does not sustain permanent damage or loss of recorded data after being subjected to the environ-
ment described below.
6.8.2.1 Random Vibration
The test consists of a random vibration applied for each of three mutually perpendicular axes with the time
duration of 15 minutes per axis. The PSD levels for the test simulates the shipping and relocation environ-
ment which is shown below.
Figure 44. Random Vibration PSD Profile Breakpoints (Operating)
Hz Random Vibration PSD Profile Breakpoints (Operating)
[ Hz] 5 17 45 48 62 65 150 200 500
× 10 - ³ [ G ² /Hz] 0.02 1.1 1.1 8.0 8.0 1.0 1.0 0.5 0.5
Note: Overall R M S (root mean square) level of vibration is 0.67G rms.
Figure 45. Random Vibration PSD Profile Breakpoints (Non-Operating)
Hz Random Vibration PSD Profile Breakpoints (Non-Operating)
Hz 2 4 8 40 55 70 200
[ G ² /Hz] 0.001 0.03 0.03 0.003 0.01 0.01 0.001
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O E M Spec. of DCAS-34330/32160