Seagate ST9500325AS Momentus 5400.6 SATA Product Manual - Page 15

Momentus 5400.6 SATA Product Manual, Rev. E

9

2.2.1

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to

n–1,

where

n

is

the number of guaranteed sectors as defined above

.

See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-

bit addressing support of drives with capacities over 137 Gbytes.

2.3

Default logical geometry

Cylinders

Read/write heads

Sectors per track

16,383

16

63

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to

n–1,

where

n

is

the number of guaranteed sectors as defined above

.

2.4

Physical organization

Drive model

Read/write heads

Number of discs

ST9500325AS, ST9500325ASG and ST9400326AS

4

2

ST9320325AS and ST9320325ASG

3

2

ST9250315AS, ST9250315ASG, ST9160314AS,

ST9160301AS and ST9160314ASG

2

1

ST9120315AS, ST9120315ASG, ST980313AS and

ST980313ASG

1

1

2.5

Recording and interface technology

ST9500325AS, ST9500325ASG, ST9400326AS,

ST9320325AS, ST9320325ASG, ST9250315AS,

ST9250315ASG ST9160314AS, ST9160314ASG,

ST9120315AS, ST9120315ASG, ST980313AS,

ST980313ASG

ST9160301AS

Interface

Serial ATA (SATA)

Recording method

Perpendicular

Recording density BPI (bits/inch avg)

1,490k

1,238k

Track density TPI (tracks/inch avg)

265k

210k

Areal density (Gbits/inch

2

avg)

394

269

Spindle speed (RPM) (

±

0.2%)

5,400

Maximum Internal transfer rate (Mbits/sec)

1,175

I/O data-transfer rate (Mbytes/sec max)

300

Interleave

1:1

Cache buffer

8 Mbytes (8,192 kbytes)

Section	Page
1.0 Introduction	7
1.1 About the Serial ATA interface	8
2.0 Drive specifications	9
2.1 Specification summary table	9
2.2 Formatted capacity	14
2.2.1 LBA mode	15
2.3 Default logical geometry	15
2.4 Physical organization	15
2.5 Recording and interface technology	15
2.6 Physical characteristics	16
2.7 Seek time	16
2.8 Start/stop times	16
2.9 Power specifications	17
2.9.1 Power consumption	17
2.9.1.1 Typical current profile	18
2.9.2 Deferred spinup	18
2.9.3 Conducted noise	18
2.9.4 Voltage tolerance	18
2.9.5 Power-management modes	19
2.10 Environmental specifications	20
2.10.1 Ambient temperature	20
2.10.2 Temperature gradient	20
2.10.3 Humidity	20
2.10.3.1 Relative humidity	20
2.10.3.2 Wet bulb temperature	20
2.10.4 Altitude	20
2.10.5 Shock	21
2.10.5.1 Operating shock	21
2.10.5.2 Nonoperating shock	21
2.10.6 Vibration	21
2.10.6.1 Operating vibration	21
2.10.6.2 Nonoperating vibration	21
2.11 Acoustics	22
2.12 Electromagnetic immunity	22
2.13 Reliability	23
2.13.1 Free Fall Protection feature	23
2.14 Agency certification	24
2.14.1 Safety certification	24
2.14.2 Electromagnetic compatibility	24
2.14.3 FCC verification	25
2.15 Environmental protection	26
2.15.1 European Union Restriction of Hazardous Substances (RoHS)	26
2.15.2 China Restriction of Hazardous Substances (RoHS) Directive	26
2.16 Corrosive environment	26
3.0 Configuring and mounting the drive	27
3.1 Handling and static-discharge precautions	27
3.2 Configuring the drive	28
3.3 Serial ATA cables and connectors	28
3.4 Drive mounting	29
4.0 Serial ATA (SATA) interface	31
4.1 Hot-Plug compatibility	31
4.2 Serial ATA device plug connector pin definitions	31
4.3 Supported ATA commands	33
4.3.1 Identify Device command	35
4.3.2 Set Features command	39
4.3.3 S.M.A.R.T. commands	40
5.0 Seagate Technology support services	41
Index	43
A	43
B	43
C	43
D	43
E	43
F	43
G	43
H	44
I	44
K	44
L	44
M	44
N	44
O	44
P	44
Q	44
R	44
S	45
T	45
U	45
V	45

Seagate ST9500325AS Momentus 5400.6 SATA Product Manual - Page 15

Default logical geometry, Physical organization, Recording and interface technology - ata device

Page 15 highlights