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Seagate ST3250823AS Product Manual - Page 18

Formatted capacity, Default logical geometry

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2.2 Formatted capacity Model ST3400832AS and ST3400632AS ST3300831AS and ST3300631AS ST3250823AS and ST3250623AS ST3200826AS Formatted capacity 400 Gbytes 300 Gbytes 250 Gbytes 200 Gbytes Guaranteed sectors 781,422,768 586,072,368 488,397,168 390,721,968 Bytes per sector 512 512 512 512 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 48bit addressing support of drives with capacities over 137 Gbytes. 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. 10 Barracuda 7200.8 Serial ATA Product Manual, Rev. D

Section	Page
1.0 Introduction	9
1.1 About the Serial ATA interface	10
2.0 Drive specifications	11
2.1 Specification summary tables	11
2.2 Formatted capacity	18
2.2.1 LBA mode	18
2.3 Default logical geometry	18
2.4 Recording and interface technology	19
2.5 Physical characteristics	19
2.6 Seek time	20
2.7 Start/stop times	20
2.8 Power specifications	21
2.8.1 Power consumption	21
2.8.1.1 Typical current profiles	22
2.8.2 Conducted noise	23
2.8.3 Voltage tolerance	23
2.8.4 Power-management modes	23
2.9 Environmental specifications	24
2.9.1 Ambient temperature	24
2.9.2 Temperature gradient	24
2.9.3 Humidity	24
2.9.3.1 Relative humidity	24
2.9.3.2 Wet bulb temperature	24
2.9.4 Altitude	24
2.9.5 Shock	24
2.9.5.1 Operating shock	24
2.9.5.2 Nonoperating shock	25
2.9.6 Vibration	25
2.9.6.1 Operating vibration	25
2.9.6.2 Nonoperating vibration	25
2.10 Acoustics	25
2.11 Electromagnetic immunity	26
2.12 Reliability	26
2.13 Agency certification	27
2.13.1 Safety certification	27
2.13.2 Electromagnetic compatibility	27
2.13.3 FCC verification	28
2.14 Environmental protection	29
2.15 Corrosive environment	29
3.0 Configuring and mounting the drive	31
3.1 Handling and static-discharge precautions	31
3.2 Configuring the drive	32
3.3 Serial ATA cables and connectors	32
3.4 Drive mounting	33
4.0 Serial ATA (SATA) interface	35
4.1 Hot-Plug compatibility	35
4.2 Serial ATA device plug connector pin definitions	36
4.3 Supported ATA commands	37
4.3.1 Identify Device command	39
4.3.2 Set Features command	42
4.3.3 S.M.A.R.T. commands	43
5.0 Seagate Technology support services	45
Index	51
A	51
B	51
C	51
D	51
E	51
F	51
G	51
H	52
I	52
K	52
L	52
M	52
N	52
O	52
P	52
Q	52
R	52
S	53
T	53
U	53
V	53