Acoustics - Seagate ST3160215ACE Product Manual

2.1.8.6.1 Operating vibration
The following table lists the maximum vibration levels that the drive may experience while meeting the perfor-
mance standards specified in this document.
5–350 Hz 0.50 Gs
2.1.8.6.2 Nonoperating vibration
The following table 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
2.1.9

Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea-
surements 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.
Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined
by the following equation:
(Number of seeks per second = 0.4 / (average latency + average access time)
Table 3: Fluid Dynamic Bearing (FDB) motor acoustics
Models
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.
12
Idle*
2.6 bels (typ)
2.8 bels (max)
DB35.3 Series SATA/PATA Product Manual, Rev. F
Seek profile
2.7 bels (typ)
2.8 bels (max)