Seagate ST3000DM001 Barracuda 7200.10 SATA Product Manual - Page 41

Barracuda 7200.10 Serial ATA Product Manual, Rev. K

35

2.10

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)

*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

.

**Measured in performance mode.

***Measured in quiet mode.

2.10.1

Test for Prominent Discrete Tones (PDTs)

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.

Table 13:

Fluid Dynamic Bearing (FDB) motor acoustics

Idle*

Seek

ST3750640AS, ST3750840AS, ST3500630AS, ST3500830AS

2.8 bels (typ)

3.0 bels (max)

3.7 bels (typ)**

3.9 bels (max)**

ST3400620AS, ST3400820AS

2.7 bels (typ)

2.9 bels (max)

3.4 bels (typ)**

3.6 bels (max)**

ST3320620AS, ST3320820AS, ST3300620AS, ST3300820AS,

ST3250620AS, ST3250820AS, ST3200820AS

2.5 bels (typ)

2.9 bels (max)

3.0 bels (typ)**

3.2 bels (max)**

ST3250410AS, ST3250310AS

2.6 bels (typ)

2.7 bels (max)

2.7 bels (typ)***

2.8 bels (max)***



ST340215AS

2.8 bels (typ)

3.0 bels (max)

3.0 bels (typ)***

3.2 bels (max)***

Section	Page
1.0 Introduction	7
1.1 About the Serial ATA interface	8
2.0 Drive specifications	9
2.1 Specification summary tables	9
2.2 Formatted capacity	32
2.2.1 LBA mode	32
2.3 Default logical geometry	32
2.4 Recording and interface technology	33
2.5 Physical characteristics	34
2.6 Seek time	35
2.7 Start/stop times	35
2.8 Power specifications	36
2.8.1 Power consumption	36
2.8.1.1 Typical current profiles	37
2.8.2 Conducted noise	37
2.8.3 Voltage tolerance	37
2.8.4 Power-management modes	38
2.9 Environmental specifications	39
2.9.1 Ambient temperature	39
2.9.2 Temperature gradient	39
2.9.3 Humidity	39
2.9.3.1 Relative humidity	39
2.9.3.2 Wet bulb temperature	39
2.9.4 Altitude	39
2.9.5 Shock	39
2.9.5.1 Operating shock	39
2.9.5.2 Nonoperating shock	40
2.9.6 Vibration	40
2.9.6.1 Operating vibration	40
2.9.6.2 Nonoperating vibration	40
2.10 Acoustics	41
2.10.1 Test for Prominent Discrete Tones (PDTs)	41
2.11 Electromagnetic immunity	42
2.12 Reliability	43
2.12.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)	43
2.13 Agency certification	43
2.13.1 Safety certification	43
2.13.2 Electromagnetic compatibility	43
2.13.3 FCC verification	44
2.14 Environmental protection	45
2.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive	45
2.14.2 China Restriction of Hazardous Substances (RoHS) Directive	45
2.15 Corrosive environment	45
3.0 Configuring and mounting the drive	47
3.1 Handling and static-discharge precautions	47
3.2 Configuring the drive	48
3.3 Serial ATA cables and connectors	48
3.4 Drive mounting	49
4.0 Serial ATA (SATA) interface	51
4.1 Hot-Plug compatibility	51
4.2 Serial ATA device plug connector pin definitions	52
4.3 Supported ATA commands	53
4.3.1 Identify Device command	55
4.3.2 Set Features command	59
4.3.3 S.M.A.R.T. commands	60
5.0 Seagate Technology support services	61
Index	63
A	63
B	63
C	63
D	63
E	63
F	63
G	63
H	63
I	64
K	64
L	64
M	64
N	64
O	64
P	64
Q	64
R	64
S	65
T	65
U	65
V	65

Seagate ST3000DM001 Barracuda 7200.10 SATA Product Manual - Page 41

Note., Test for Prominent Discrete Tones PDTs, Table 13, Fluid Dynamic Bearing FDB motor acoustics

Page 41 highlights