Vibration And Shock; Operating Vibration; Table 18. Random Vibration Psd Profile Breakpoints (Operating); Table 19. Swept Sine Vibration - Hitachi 7K100 - Travelstar - Hard Drive Specifications

6.5 Vibration and shock

All vibration and shock measurements in this section are for drives without mounting attachments for systems. The
input level shall be applied to the normal drive mounting points.Vibration tests and shock tests are to be conducted
by mounting the drive to a table using the bottom four mounting holes.

6.5.1 Operating vibration

The drive will operate without a hard error while being subjected to the following vibration levels.
6.5.1.1 Random vibration
The test consists of 30 minutes of random vibration using the power spectral density (PSD) levels below. The
vibration test level is 6.57 m/sec
Table 18: Random vibration PSD profile breakpoints (operating)
Random vibration PSD profile breakpoint
Hz m x 10n (m
5
17
45
48
62
65
150
200
500
6.5.1.2 Swept sine vibration
Table 19: Swept sine vibration
Swept sine vibration
(zero to peak 5 to 500 to 5 Hz sine wave)
2
9.8 m/sec (1 G) (5-500 Hz)
2
RMS (Root Mean Square) (0.67 G RMS).
2 4
/sec )/Hz
1.9 x E–3
1.1 x E–1
1.1 x E–1
7.7 x E–1
7.7 x E–1
9.6 x E–2
9.6 x E–2
4.8x E–2
4.8 x E–2
Travelstar 7K100 Hard Disk Drive Specification
Sweep rate (oct/min)
2.0
30