IBM DTCA-24090 Hard Drive Specifications - Page 37

Operating Shock, Non-Operating Shock

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5.5.2.2 Swept Sine Vibration 25.4mm (peak to peak) displacement, 5 to 10 to 5 Hz 5 G (zero to peak), 10 to 500 to 10 Hz sine wave 0.5 oct/min sweep rate 5.5.3 Operating Shock The hard disk drive meets the following criteria while operating in the conditions described below. The shock test consists of ten shock inputs in each axis and direction for a total of 60. There must be a minimum 3 seconds delay between shock pulses. Soft errors and automatic retries are allowed during the test. No data loss or permanent damage : 100G/2msec half-sine shock pulse, 10G/11msec half-sine shock pulse The input level shall be applied to the normal disk drive subsystem mounting points, as mounted in normal system use. 5.5.4 Non-Operating Shock The disk drive must withstand with no damage or degradation of performance, a 120G half-sine wave shock pulse of 11 ms duration and a 600G half-sine wave shock pulse of 2 ms duration on six sides when heads are parked. (When the power is not applied to the unit, the heads are automatically located on the parked position.) All shocks shall be applied in each direction of the drive's three mutually perpendicular axes, one axis at a time. Input levels shall be measured at the frame of the disk drive. Specification 29

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5.5.2.2
Swept Sine Vibration
25.4mm (peak to peak) displacement, 5 to 10 to 5 Hz
5 G (zero to peak), 10 to 500 to 10 Hz sine wave
0.5 oct/min sweep rate
5.5.3
Operating Shock
The hard disk drive meets the following criteria while operating in the conditions described below.
The
shock test consists of ten shock inputs in each axis and direction for a total of 60.
There must be a
minimum 3 seconds delay between shock pulses. Soft errors and automatic retries are allowed during the
test.
No data loss or permanent damage : 100G/2msec half-sine shock pulse, 10G/11msec half-sine shock pulse
The input level shall be applied to the normal disk drive subsystem mounting points, as mounted in normal
system use.
5.5.4
Non-Operating Shock
The disk drive must withstand with no damage or degradation of performance, a 120G half-sine wave shock
pulse of 11 ms duration and a 600G half-sine wave shock pulse of 2 ms duration on six sides when heads are
parked.
(When the power is not applied to the unit, the heads are automatically located on the parked
position.)
All shocks shall be applied in each direction of the drive's three mutually perpendicular axes, one axis at a
time.
Input levels shall be measured at the frame of the disk drive.
Specification
29