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Seagate ST9250412AS Momentus 7200.2 SATA Product Manual - Page 12

Physical organization, Recording and interface technology, Physical characteristics

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2.4 Physical organization Drive model ST9200420AS and ST9200420ASG ST9160823AS and ST9160823ASG ST9120823AS ST9100821AS ST980813AS and ST980813ASG Read/write heads 4 3 2 Number of discs 2 1 2.5 Recording and interface technology Interface 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 (Mbits/sec) Sustained transfer rate OD (Mbytes/sec max) I/O data-transfer rate (Mbytes/sec max) Interleave Cache buffer 200 GB models 160 - 80 GB models Serial ATA (SATA) 1,014,000 853,000 162,600 155,000 169.4 131 7,200 850 711 69.5 59 300 (can also be configured for 150MB/s operation) 1:1 16 Mbytes (16,384 kbytes) 8 Mbytes (8,192 kbytes) 2.6 Physical characteristics Drive specification Height (mm) (inches) Width (mm) (inches) Length (mm) (inches) Maximum weight (grams) (pounds) 9.5 +/-0.2 0.374 +/-0.0078 69.85 +/-0.25 2.75 +/-0.00984 100.5+/- 0.25 3.957 +/- 0.00984 115 grams (0.254 lb) 6 Momentus 7200.2 SATA Product Manual, Rev. E

Section	Page
1.0 Introduction	7
1.1 About the Serial ATA (SATA) 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	11
2.4 Physical organization	12
2.5 Recording and interface technology	12
2.6 Physical characteristics	12
2.7 Seek time	13
2.8 Start/stop times	13
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 Humidity	17
2.10.3.1 Relative humidity	17
2.10.3.2 Wet bulb temperature	17
2.10.4 Altitude	17
2.10.5 Shock	18
2.10.5.1 Operating shock	18
2.10.5.2 Nonoperating shock	18
2.10.6 Vibration	18
2.10.6.1 Operating vibration	18
2.10.6.2 Nonoperating vibration	18
2.11 Acoustics	19
2.12 Electromagnetic immunity	19
2.13 Reliability	20
2.13.1 Free Fall Protection feature	20
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) Directive	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	36
4.3.3 S.M.A.R.T. commands	37
5.0 Seagate Technology support services	39
Index	41
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