Seagate 100516232 User Manual

Constellation ES Serial ATA Product Manual, Rev. G

19

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.

The maximum vibration levels that the drive may experience while meeting the performance standards speci-
fied in this document are specified below.

* Rotary Random Operating 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.

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)

ST32000644NS

2.7 bels (typ)

 

2.9 bels (max)

3.0 bels (typ)

 

3.3 bels (max)

ST31000524NS

2.2 bels (typ)

 

2.5 bels (max)

2.8 bels (typ)

 

3.1 bels (max)

ST3500514NS

1.9 bels (typ)

 

2.3 bels (max)

2.7 bels (typ)

 

3.0 bels (max)

*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.

5–22 Hz

0.25 Gs

22–350 Hz

0.50 Gs

350–500 Hz

0.25 Gs

20 - 1500Hz

 

*(RROV)

12.5 rads/s

2

  w/RVFF

10–500 Hz

 

Linear Random

4.9 Grms ref