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Seagate ST9250412AS Momentus 7200.3 SATA Product Manual - Page 12

Default logical geometry, Physical organization, Recording and interface technology

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2.3 Default logical geometry Cylinders 16,383 Read/write heads 16 Sectors per track 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 ST9320421AS and ST9320421ASG ST9250421AS and ST9250421ASG ST9200421AS and ST9200423ASG ST9160411AS and ST9160411ASG ST9120411AS and ST9120411ASG ST980411AS and ST980411ASG Read/write heads 4 3 3 2 2 1 Number of discs 2 2 2 1 1 1 2.5 Recording and interface technology Interface Recording method Recording density BPI (bits/inch max) Track density TPI (tracks/inch max) Areal density (Gbits/inch2 max) Spindle speed (RPM) (± 0.2%) Maximum Internal transfer rate (Gbits/sec) I/O data-transfer rate (Gbits/sec max) Interleave Cache buffer Serial ATA (SATA) Perpendicular 1,334k 190k 253 7,200 1.1 3.0 1:1 16 Mbytes (16,384 kbytes) 6 Momentus 7200.3 SATA Product Manual, Rev. C

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	11
2.2.1 LBA mode	11
2.3 Default logical geometry	12
2.4 Physical organization	12
2.5 Recording and interface technology	12
2.6 Physical characteristics	13
2.7 Seek time	13
2.8 Start/stop times	14
2.9 Power specifications	14
2.9.1 Power consumption	14
2.9.1.1 Typical current profile	15
2.9.2 Conducted noise	15
2.9.3 Voltage tolerance	15
2.9.4 Power-management modes	16
2.10 Environmental specifications	17
2.10.1 Ambient temperature	17
2.10.2 Temperature gradient	17
2.10.3 Relative humidity	17
2.10.4 Wet bulb temperature	17
2.10.5 Altitude	17
2.10.6 Shock	17
2.10.6.1 Operating shock	17
2.10.6.2 Nonoperating shock	18
2.10.7 Vibration	18
2.10.7.1 Operating vibration	18
2.10.7.2 Nonoperating vibration	18
2.11 Acoustics	18
2.12 Electromagnetic immunity	19
2.13 Reliability	19
2.13.1 Free Fall Protection feature	19
2.14 Agency certification	20
2.14.1 Safety certification	20
2.14.2 Electromagnetic compatibility	20
2.14.3 FCC verification	21
2.15 Environmental protection	22
2.15.1 European Union Restriction of Hazardous Substances (RoHS)	22
2.15.2 China Restriction of Hazardous Substances (RoHS) Directive	22
2.16 Corrosive environment	22
3.0 Configuring and mounting the drive	25
3.1 Handling and static-discharge precautions	25
3.2 Configuring the drive	26
3.3 Serial ATA cables and connectors	26
3.4 Drive mounting	27
4.0 Serial ATA (SATA) interface	29
4.1 Hot-Plug compatibility	29
4.2 Serial ATA device plug connector pin definitions	29
4.3 Supported ATA commands	31
4.3.1 Identify Device command	33
4.3.2 Set Features command	37
4.3.3 S.M.A.R.T. commands	38
5.0 Seagate Technology support services	39
A	41
B	41
C	41
D	41
E	41
F	41
G	41
H	42
I	42
K	42
L	42
M	42
N	42
O	42
P	42
Q	42
R	42
S	43
T	43
U	43
V	43