11.0 Acoustics, Vibration and Shock

11.1 Acoustics

All SSD models have no acoustics, (0 bels).

11.2 Operating Vibration

11.2.1 Random Vibration

The drive is designed to operate without unrecoverable errors while being subjected to the vibration levels as defined below.

The assessments are carried out during 30 minutes of random vibration using the power spectral density (PSD) levels as follows.

No Errors:

2.17 G RMS, 5-700 Hz, flat PSD profile for each of the three mutually perpendicular axes.

Note:

The specified levels are measured at the mounting points.

11.2.2 Swept Sine Vibration

The drive will meet the criterion while operating in the respective conditions as described below.

No errors:

2.17 G RMS, 5-700 Hz.

11.3 Non-operating Vibrations

The drive will not sustain permanent damage or loss of recorded data after being subjected to the environments as described below.

11.3.1 Random Vibration

The test consists of a random vibration applied for each of the three mutually perpendicular axes. A time duration of ten minutes per axis.

3.13 G RMS, 5-800 Hz, flat PSD profile.

11.3.2 Swept Sine Vibration

The test consists of a swept sine vibration applied for each of the three mutually perpendicular axes.

3.13 G RMS, 10-800 Hz

11.4 Operating shock

The drive will meet the criterion while operating in the respective conditions as described below.

No data loss: 1000G, @0.5 ms duration, half sinewave shock pulse

500G, @ 2 ms duration, half sinewave shock pulse

The shock pulses of each level are applied to the drive, ten pulses for each direction and for all three mutually perpendicular axes. There must be a minimum of thirty seconds delay between shock pulses. The input level is applied to a base plate where the drive is attached using four mounting screws.

11.5 Non-operating shock

The drive will not sustain permanent damage or loss of recorded data after being subjected to the environments as described

HGST Ultrastar SSD400S.B (SAS) Solid State Drive Specification

29