Hitachi HDS723020BLA642 manual Vibration and shock, Operating vibration, Random vibration

Models: HDS723020BLA642

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7K200 SATA OEM Specification

6.5Vibration 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.

6.5.1Operating 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/sec2 RMS (Root Mean Square) (0.67 G RMS).

Random vibration PSD profile Breakpoint

Hz

m x 10n (m2/sec4)/Hz

5

1.9 x E–3

17

1.1 x E–1

45

1.1 x E–1

48

7.7 x E–1

62

7.7 x E–1

65

9.6 x E–2

150

9.6 x E–2

200

4.8 x E–2

500

4.8 x E–2

 

 

Table 17. Random vibration PSD profile breakpoints (operating)

6.5.1.2Swept sine vibration

Swept sine vibration (zero to peak 5 to

Sweep rate (oct/min)

500 to 5 Hz sine wave)

 

9.8 m/sec2 (1 G) (5-500 Hz)

1.0

Table 18. Swept sine vibration

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Hitachi HDS723020BLA642 manual Vibration and shock, Operating vibration, Random vibration, Swept sine vibration