IBM DTLA-305040 Hard Drive Specifications - Page 70

Vibration and shock, 8.1 Operating vibration

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7.8 Vibration and shock All vibration and shock measurements recorded 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 test consists of 30 minutes of random vibration using the power spectral density (PSD) levels shown below in each of three mutually perpendicular axes. Direction Horizontal x10-3 [G2/Hz] Vertical x10-3 [G2/Hz] 5 Hz 17 Hz 45 Hz 48 Hz 62 Hz 65 Hz 150 Hz 200 Hz 500 Hz RMS (G) 0.02 1.1 1.1 8.0 8.0 1.0 1.0 0.5 0.5 0.67 0.02 1.1 1.1 8.0 8.0 1.0 1.0 0.08 0.08 0.56 Figure 61. Random vibration PSD profile break points (operating) The overall RMS (root mean square) level is 0.67G for horizontal vibration and 0.56G for vertical. 7.8.1.2 Swept sine vibration The hard disk drive will meet the criteria shown below while operating in the specified conditions: Ÿ No errors occur with 0.5 G 0 to peak, 5 to 300 to 5 Hz sine wave, 0.5 oct/min sweep rate with 3-minute dwells at 2 major resonances Ÿ No data loss occurs with 1 G 0 to peak, 5 to 300 to 5 Hz sine wave, 0.5 oct/min sweep rate with 3-minute dwells at 2 major resonances 7.8.2 Nonoperating vibration The drive does not sustain permanent damage or loss of previously recorded data after being subjected to the environment described below. Deskstar 40GV & 75GXP hard disk drive specifications 58

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7.8 Vibration and shock
All vibration and shock measurements recorded 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 test consists of 30 minutes of random vibration using the power spectral density
(PSD) levels shown below in each of three mutually perpendicular axes.
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 61. Random vibration PSD profile break points (operating)
The overall RMS (root mean square) level is 0.67G for horizontal vibration and 0.56G for vertical.
7.8.1.2
Swept sine vibration
The hard disk drive will meet the criteria shown below while operating in the specified conditions:
°
No errors
occur with 0.5 G 0 to peak, 5 to 300 to 5 Hz sine wave, 0.5 oct/min sweep rate with
3-minute dwells at 2 major resonances
°
No data loss
occurs with 1 G 0 to peak, 5 to 300 to 5 Hz sine wave, 0.5 oct/min sweep rate with
3-minute dwells at 2 major resonances
7.8.2 Nonoperating vibration
The drive does not sustain permanent damage or loss of previously recorded data after being subjected
to the environment described below.
Deskstar 40GV & 75GXP hard disk drive specifications
58