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Seagate DB35.4 DB35.4 Series SATA Product Manual - Page 13

Physical characteristics, Seek time, Start/stop times

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2.5 Physical characteristics Maximum height Maximum width Maximum length Typical weight Cache buffer 20.20 mm (0.794 inches) 101.6 mm (4.000 inches) 146.99 mm (5.787 inches) 382 grams (0.842 lb.) 8 Mbytes (8,192 kbytes) 2.6 Seek time Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows: • Track-to-track seek time is an average of all possible single-track seeks in both directions. • Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead. Typical seek times (msec) Track-to-track Average Read

Section	Page
1.0 Introduction 1	3
1.1 About the Serial ATA interface 2	3
2.0 Drive specifications 3	3
2.1 Specification summary tables 3	3
2.2 Formatted capacity 6	3
2.2.1 LBA mode 6	3
2.3 Default logical geometry 6	3
2.4 Recording and interface technology 6	3
2.5 Physical characteristics 7	3
2.6 Seek time 7	3
2.7 Start/stop times 7	3
2.8 Power specifications 8	3
2.8.1 Power consumption 8	3
2.8.2 Conducted noise 9	3
2.8.3 Voltage tolerance 9	3
2.8.4 Power-management modes 10	3
2.9 Environmental specifications 11	3
2.9.1 Drive case temperature 11	3
2.9.2 Temperature gradient 11	3
2.9.3 Humidity 11	3
2.9.4 Altitude 11	3
2.9.5 Shock 11	3
2.9.6 Vibration 12	3
2.10 Acoustics emissions 13	3
2.11 Electromagnetic immunity 13	3
2.12 Reliability 14	3
2.12.1 Annualized Failure Rate (AFR) 14	3
2.13 Agency certification 14	3
2.13.1 Safety certification 14	3
2.13.2 Electromagnetic compatibility 14	3
2.13.3 FCC verification 15	3
2.14 Environmental protection 16	3
2.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive 16	3
2.14.2 China Restriction of Hazardous Substances (RoHS) Directive 16	3
2.15 Corrosive environment 16	3
3.0 Configuring and mounting the drive 17	3
3.1 Handling and static-discharge precautions 17	3
3.2 Configuring the drive 18	3
3.3 Serial ATA cables and connectors 18	3
3.4 Drive mounting 19	3
4.0 Serial ATA (SATA) interface 21	3
4.1 Hot-Plug compatibility 21	3
4.2 Serial ATA device plug connector pin definitions 22	3
4.3 Supported ATA commands 23	3
4.3.1 Identify Device command 25	3
4.3.2 Set Features command 29	3
4.3.3 S.M.A.R.T. commands 30	3
5.0 Seagate Technology support services 31	3
Figure 1. Typical 5V startup and operation current profile 9	5
Figure 2. Typical 12V startup and operation current profile 9	5
Figure 3. Serial ATA connectors 18	5
Figure 4. Attaching SATA cabling 18	5
Figure 5. Mounting dimensions 19	5
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	12
2.2.1 LBA mode	12
2.3 Default logical geometry	12
2.4 Recording and interface technology	12
2.5 Physical characteristics	13
2.6 Seek time	13
2.7 Start/stop times	13
2.8 Power specifications	14
2.8.1 Power consumption	14
2.8.1.1 Typical current profiles	15
2.8.2 Conducted noise	15
2.8.3 Voltage tolerance	15
2.8.4 Power-management modes	16
2.9 Environmental specifications	17
2.9.1 Drive case temperature	17
2.9.2 Temperature gradient	17
2.9.3 Humidity	17
2.9.3.1 Relative humidity	17
2.9.3.2 Wet bulb temperature	17
2.9.4 Altitude	17
2.9.5 Shock	17
2.9.5.1 Operating shock	17
2.9.5.2 Nonoperating shock	17
2.9.6 Vibration	18
2.9.6.1 Operating vibration	18
2.9.6.2 Nonoperating vibration	18
2.10 Acoustics emissions	19
2.11 Electromagnetic immunity	19
2.12 Reliability	20
2.12.1 Annualized Failure Rate (AFR)	20
2.13 Agency certification	20
2.13.1 Safety certification	20
2.13.2 Electromagnetic compatibility	20
2.13.3 FCC verification	21
2.14 Environmental protection	22
2.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive	22
2.14.2 China Restriction of Hazardous Substances (RoHS) Directive	22
2.15 Corrosive environment	22
3.0 Configuring and mounting the drive	23
3.1 Handling and static-discharge precautions	23
3.2 Configuring the drive	24
3.3 Serial ATA cables and connectors	24
3.4 Drive mounting	25
4.0 Serial ATA (SATA) interface	27
4.1 Hot-Plug compatibility	27
4.2 Serial ATA device plug connector pin definitions	28
4.3 Supported ATA commands	29
4.3.1 Identify Device command	31
4.3.2 Set Features command	35
4.3.3 S.M.A.R.T. commands	36
5.0 Seagate Technology support services	37
Index	39
A	39
B	39
C	39
D	39
E	39
F	39
G	39
H	39
I	39
K	40
L	40
M	40
N	40
O	40
P	40
Q	40
R	40
S	40
T	41
U	41
V	41