Seagate ST500LX009 ユーザーズマニュアル

S

EAGATE 

U

LTRA 

M

OBILE 

SSHD P

RODUCT 

M

ANUAL

, R

EV

. D

  11

 D

RIVE 

S

PECIFICATIONS 

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 specified in this 

document are specified below.

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 emission of sound is measured consistent with the ECMA-74 and its referenced standards. Testing is conducted at 

room temperature (approximately 25°C). Emission levels are reported as the total A-weighted sound power levers for steady 

state, idle, and active seeks modes of operation.

Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process is the use 

of the absolute threshold of hearing. Seagate uses the lower limit for the threshold curve* to discern tone audibility and to 

compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 

standards.

*Defined as the median curve given by ISO 389-7 (Tf curve) minus 10dB at all frequencies.

5–200 Hz

2.0 Gs (0 to peak). Max displacement may apply below 10 Hz.

201–500 Hz

1.0 Gs (0 to peak).

5–500 Hz

5.0 Gs (0 to peak). Max displacement may apply below 22 Hz.

1.

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.

2.0 bels (typ)

2.2 bels (max)

2.2 bels (typ)

2.4 bels (max)