Shock; Vibration; Acoustics - Seagate ST2000NX0243 Product Manual

2.6.4

Shock

All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws.
Shock may be applied in the X, Y or Z axis.
2.6.4.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum operating shock
of 25 Gs based on half-sine shock pulses of 2ms. Shocks should not be repeated more than two times per second.
2.6.4.2 Nonoperating shock
The nonoperating shock level that the drive can experience without incurring physical damage or degradation in
performance when subsequently put into operation is 400 Gs based on a nonrepetitive half-sine shock pulse of 2ms
duration.
2.6.5

Vibration

All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting
screws. Vibration may be applied in the X, Y or Z axis.
2.6.5.1 Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards specified in this
document are specified below.
10 - 500 Hz
20 - 1800Hz *(RROV)
* Rotary Random Operating Vibration
2.6.5.2 Nonoperating vibration
The maximum nonoperating vibration levels that the drive may experience without incurring physical damage or degradation
in performance when subsequently put into operation are specified below.
10 - 500 Hz Linear Random
2.7

Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements are
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.
For seek mode tests, the drive is placed in seek mode only.
The number of seeks per second is defined by the following equation:
Note
(Number of seeks per second = 0.4 / (average latency + average access time)
)
Table 4 Fluid Dynamic Bearing (FDB) motor acoustics
All models
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational
levels.
Seagate Enterprise Capacity 2.5 HDD v3 SATA Product Manual, Rev. D
0.5 Gs
2
16 rads/s w/RVFF
2.4 Grms ref
Idle*
2.8 bels (typ)
3.0 bels (max)
Performance seek
3.2 bels (typ)
3.4 bels (max)
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