Drive Acoustics; Electromagnetic Susceptibility; Reliability - Seagate Medalist 4340 Product Manual

14 Medalist 4340, 3230, 2120, 1721 and 1010, Rev. A
1.8.6.2 Nonoperating vibration
The following lists the maximum nonoperating vibration that the drive
may experience without incurring physical damage or degradation in
performance when subsequently put into operation.
5–350 Hz 5.0 Gs acceleration (zero to peak)

1.9 Drive acoustics

Drive acoustics are measured as overall A-weighted acoustic sound
power levels (no pure tones). All measurements are generally consistent
with ISO document 7779. Sound power measurements are taken under
essentially free-field conditions over a reflecting plane. For all tests, the
drive is oriented with the cover facing upward.
Mode
Idle
Read/Write

1.10 Electromagnetic susceptibility

The drive operates without errors when subjected to the following:
Radiated noise*
Electrostatic discharge*
Magnetic field strength
* Electrostatic discharge and radiated noise susceptibility are measured
with the drive mounted in a representative computer system (mounted
to a ground plane with earth grounding). Discharges are applied to the
bezel or other external surfaces on the ground plane.

1.11 Reliability

Nonrecoverable read errors
Mean time between failures
Typical sound Maximum sound
power (bels) power (bels)
3.7 4.1
4.3 4.6
3 volt/meter, 30 Hz to 1 GHz
10 KVolts
5 Gauss
14
1 per 10 bits read, max
300,000 power-on hours
(nominal power, 25°C ambient
temperature)