Hitachi HTS725050A9A364 Datasheet download pdf (Page 35)

7K500 OEM SPECIFICATION

Page 35 of 176

6.5.2

6.5.26.5.2

6.5.2

Non

NonNon

Non-

-operating vibration

operating vibrationoperating vibration

operating vibration

The disk drive withstands the following vibration levels without any loss or permanent damage.

6.5.2.1

6.5.2.16.5.2.1

6.5.2.1 Random vibration

Random vibration Random vibration

Random vibration

The test consists of a random vibration applied in each of three mutually perpendicular axes for a duration

of 15 minutes per axis. The PSD levels for the test simulating the shipping and relocation environment is

shown below.

(m/sec

)/Hz

2.5 0.096

5 2.88

40 1.73

500 1.73

Table 19. Random Vibration PSD Profile Breakpoints (non-operating)

Note: Overall RMS level of vibration is 29.50 m/sec

(3.01 G).

6.5.2.2

6.5.2.26.5.2.2

6.5.2.2 Swept sine vibration

Swept sine vibration Swept sine vibration

Swept sine vibration



49 m/sec

(5 G) (zero-to-peak), 10 to 500 to 10 Hz sine wave



0.5 oct/min sweep rate



25.4 mm (peak-to-peak) displacements, 5 to 10 to 5 Hz

6.5.3

6.5.36.5.3

6.5.3

Operating shock

Operating shockOperating shock

Operating shock

The hard disk drive meets the criteria in the table below while operating under these conditions:



The shock test consists of 10 shock inputs in each axis and direction for a total of 60.



There must be a minimum delay of 3 seconds between shock pulses.



The disk drive will operate without a hard error while subjected to the following half-sine shock pulse.

Duration of 1 ms Duration of 2 ms

2205 m/sec

(225 G) 3920 m/sec

(400 G)

Table 20. Operating shock

The input level shall be applied to the normal disk drive subsystem mounting points used to secure the

drive in a normal system.

6.5.4

6.5.46.5.4

6.5.4

Non

NonNon

Non-

-operating shock

operating shockoperating shock

operating shock

The drive withstands the following half-sine shock pulse without any data loss or permanent damage.

Duration of 1 ms

Duration of 11 ms

9800 m/sec

(1000 G) 1470 m/sec

(150 G)

Table 21. Non-operating shock

The shocks are applied for each direction of the drive for three mutually perpendicular axes, one axis at a

time. Input levels are measured on a base plate where the drive is attached with four screws.

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Hitachi HTS725050A9A364 Datasheet Page 35

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