IBM IC35L036UWDY10 Hard Drive Specifications - Page 57

vibration & shock, 8.1 Operating vibration

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7.8 Vibration and shock All vibration and shock measurements in this section are made with a drive that has no mounting attachments for the systems. The input power for the measurements is applied to the normal drive mounting points. 7.8.1 Operating vibration 7.8.1.1 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. Random vibration PSD profile breakpoints (operating) Direction Horizontal x103 [G2/Hz] Vertical x103 [G2/Hz] 5 Hz 0.02 0.02 17 Hz 45 Hz 48 Hz 62 Hz 65 Hz 150 Hz 200 Hz 500 Hz 1.1 1.1 8.0 8.0 1.0 1.0 0.5 0.5 1.1 1.1 8.0 8.0 1.0 1.0 0.08 0.08 RMS (G) 0.67 0.56 Figure 44. Random vibration PSD profile breakpoints (operating) Overall RMS (root mean square) level of horizontal vibration is 0.67 G RMS. Overall RMS (root mean square) level of vertical vibration is 0.56 G RMS. NOTE: The specified levels are measured at the mounting points. 7.8.1.2 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 No data loss 1 G 0-peak, 5-300-5 Hz sine wave, 0.5 oct/min sweep rate 7.8.2 Non-operating vibrations The drive does not sustain permanent damage or loss of recorded data after being subjected to the environment described below. 7.8.2.1 Random vibration The test consists of a random vibration applied for each of three mutually perpendicular axes with the time duration of 10 minutes per axis. The PSD levels for the test simulates the shipping and relocation environment which is shown below. Random vibration PSD profile breakpoints (non-operating) Frequency [G2/Hz] 2 Hz 0.001 4 Hz 0.03 8 Hz 0.03 40 Hz 0.003 55 Hz 0.01 70 Hz 0.01 200 Hz RMS (G) 0.001 1.04 Figure 45. Random vibration PSD profile breakpoints ( non-operating) Ultrastar 146Z10 hard disk drive specifications 41

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7.8
Vibration and shock
All vibration and shock measurements in this section are made with a drive that has no mounting attach-
ments for the systems. The input power for the measurements is applied to the normal drive mounting
points.
7.8.1 Operating vibration
7.8.1.1 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.
Random vibration PSD profile breakpoints (operating)
0.56
0.08
0.08
1.0
1.0
8.0
8.0
1.1
1.1
0.02
Vertical
x10
3
[G
2
/Hz]
0.67
0.5
0.5
1.0
1.0
8.0
8.0
1.1
1.1
0.02
Horizontal
x10
3
[G
2
/Hz]
RMS
(G)
500 Hz
200 Hz
150 Hz
65 Hz
62 Hz
48 Hz
45 Hz
17 Hz
5 Hz
Direction
Figure 44.
Random vibration PSD profile breakpoints (operating)
Overall RMS (root mean square) level of horizontal vibration is 0.67 G RMS.
Overall RMS (root mean square) level of vertical vibration is 0.56 G RMS.
NOTE: The specified levels are measured at the mounting points.
7.8.1.2 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
No data loss
1 G 0-peak, 5-300-5 Hz sine wave, 0.5 oct/min sweep rate
7.8.2 Non-operating vibrations
The drive does not sustain permanent damage or loss of recorded data after being subjected to the
environment described below.
7.8.2.1 Random vibration
The test consists of a random vibration applied for each of three mutually perpendicular axes with the time
duration of 10 minutes per axis. The PSD levels for the test simulates the shipping and relocation
environment which is shown below.
Random vibration PSD profile breakpoints (non-operating)
1.04
0.001
0.01
0.01
0.003
0.03
0.03
0.001
[G
2
/Hz]
RMS (G)
200 Hz
70 Hz
55 Hz
40 Hz
8 Hz
4 Hz
2 Hz
Frequency
Figure 45.
Random vibration PSD profile breakpoints (non-operating)
Ultrastar 146Z10 hard disk drive specifications
41