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Seagate SV35 SV35.3 Series SATA Product Manual - Page 24

Annualized Failure Rate AFR and Mean Time Between Failures MTBF - hdd

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2.12 Reliability 2.12.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) The product shall achieve an Annualized Failure Rate (AFR) of 0.80% (MTBF of 1+ million hours) when operated in an environment of ambient air temperatures of 25°C, assuming delta between ambient air temperature and HDD case temperature is less than 15°C. Operation at temperatures outside the specifications in Section 2.9 may increase the product AFR (decrease MTBF). AFR and MTBF are population statistics that are not relevant to individual units. AFR and MTBF specifications are based on the following assumptions for Digital Video Surveillance computer environments: • 8760 power-on-hours per year. • 10,000 average motor start/stop cycles per year. • Operations at nominal voltages. • Temperatures outside the specifications in Section 2.9 may reduce the product reliability. • Normal I/O duty cycle for desktop personal computers. Operation at excessive I/O duty cycle may degrade product reliability. The surveillance environment of power-on-hours, temperature, and I/O duty cycle affect the product AFR and MTBF. The AFR and MTBF will be degraded if used in a enterprise application. Nonrecoverable read errors 1 per 1014 bits read, max Annualized Failure Rate (AFR) 0.80% (nominal power, 25°C ambient temperature) Contact start-stop cycles 50,000 cycles (at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle) Warranty To determine the warranty for a specific drive, use a web browser to access the following web page: http://www.seagate.com/support/service/ From this page, click on the "Verify Your Warranty" link. You will be asked to provide the drive serial number, model number (or part number) and country of purchase. The system will display the warranty information for your drive. Preventive maintenance None required. 18 SV35.3 Series Serial ATA Product Manual, Rev. B

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 8	3
2.2.1 LBA mode 8	3
2.3 Default logical geometry 8	3
2.4 Recording and interface technology 9	3
2.5 Physical characteristics 9	3
2.6 Seek time 10	3
2.7 Start/stop times 10	3
2.8 Power specifications 11	3
2.8.1 Power consumption 11	3
2.8.2 Conducted noise 13	3
2.8.3 Voltage tolerance 13	3
2.8.4 Power-management modes 14	3
2.9 Environmental specifications 15	3
2.9.1 Drive case temperature 15	3
2.9.2 Temperature gradient 15	3
2.9.3 Humidity 15	3
2.9.4 Altitude 15	3
2.9.5 Shock 16	3
2.9.6 Vibration 16	3
2.10 Acoustics 17	3
2.11 Electromagnetic immunity 17	3
2.12 Reliability 18	3
2.12.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) 18	3
2.13 Agency certification 19	3
2.13.1 Safety certification 19	3
2.13.2 Electromagnetic compatibility 19	3
2.13.3 FCC verification 19	3
2.14 Environmental protection 20	3
2.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive 20	3
2.14.2 China Restriction of Hazardous Substances (RoHS) Directive 20	3
2.15 Corrosive environment 21	3
3.0 Configuring and mounting the drive 23	3
3.1 Handling and static-discharge precautions 23	3
3.2 Configuring the drive 24	3
3.3 Serial ATA cables and connectors 24	3
3.4 Drive mounting 25	3
4.0 Serial ATA (SATA) interface 27	3
4.1 Hot-Plug compatibility 27	3
4.2 Serial ATA device plug connector pin definitions 28	3
4.3 Supported ATA commands 30	3
4.3.1 Identify Device command 33	3
4.3.2 Set Features command 37	3
4.3.3 S.M.A.R.T. commands 39	3
5.0 Seagate Technology support services 41	3
Figure 1. Serial ATA connectors 24	5
Figure 2. Attaching SATA cabling 24	5
Figure 3. Mounting dimensions-top, side and end view 25	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	14
2.2.1 LBA mode	14
2.3 Default logical geometry	14
2.4 Recording and interface technology	15
2.5 Physical characteristics	15
2.6 Seek time	16
2.7 Start/stop times	16
2.8 Power specifications	17
2.8.1 Power consumption	17
2.8.2 Conducted noise	19
2.8.3 Voltage tolerance	19
2.8.4 Power-management modes	20
2.9 Environmental specifications	21
2.9.1 Drive case temperature	21
2.9.2 Temperature gradient	21
2.9.3 Humidity	21
2.9.3.1 Relative humidity	21
2.9.3.2 Wet bulb temperature	21
2.9.4 Altitude	21
2.9.5 Shock	22
2.9.5.1 Operating shock	22
2.9.5.2 Nonoperating shock (4, 3 and 2 disc models)	22
2.9.5.3 Nonoperating shock (1 disc models)	22
2.9.6 Vibration	22
2.9.6.1 Operating vibration	22
2.9.6.2 Nonoperating vibration	22
2.10 Acoustics	23
2.11 Electromagnetic immunity	23
2.12 Reliability	24
2.12.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)	24
2.13 Agency certification	25
2.13.1 Safety certification	25
2.13.2 Electromagnetic compatibility	25
2.13.3 FCC verification	25
2.14 Environmental protection	26
2.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive	26
2.14.2 China Restriction of Hazardous Substances (RoHS) Directive	26
2.15 Corrosive environment	27
3.0 Configuring and mounting the drive	29
3.1 Handling and static-discharge precautions	29
3.2 Configuring the drive	30
3.3 Serial ATA cables and connectors	30
3.4 Drive mounting	31
4.0 Serial ATA (SATA) interface	33
4.1 Hot-Plug compatibility	33
4.2 Serial ATA device plug connector pin definitions	34
4.3 Supported ATA commands	36
4.3.1 Identify Device command	39
4.3.2 Set Features command	43
4.3.3 S.M.A.R.T. commands	45
5.0 Seagate Technology support services	47
Index	49
A	49
C	49
D	49
E	49
F	49
G	49
H	49
I	49
K	50
L	50
M	50
N	50
O	50
P	50
Q	50
R	50
S	50
T	51
U	51
V	51

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SV35.3 Series Serial ATA Product Manual, Rev. B

2.12

Reliability

2.12.1

Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)

The product shall achieve an Annualized Failure Rate (AFR) of 0.80% (MTBF of 1+ million hours) when

operated in an environment of ambient air temperatures of 25°C, assuming delta between ambient air

temperature and HDD case temperature is less than 15°C. Operation at temperatures outside the

specifications in Section 2.9 may increase the product AFR (decrease MTBF). AFR and MTBF are population

statistics that are not relevant to individual units.

AFR and MTBF specifications are based on the following assumptions for Digital Video Surveillance computer

environments:

•

8760 power-on-hours per year.

•

10,000 average motor start/stop cycles per year.

•

Operations at nominal voltages.

•

Temperatures outside the specifications in Section 2.9 may reduce the product reliability.

•

Normal I/O duty cycle for desktop personal computers. Operation at excessive I/O duty cycle may degrade

product reliability.

The surveillance environment of power-on-hours, temperature, and I/O duty cycle affect the product AFR and

MTBF. The AFR and MTBF will be degraded if used in a enterprise application.

Nonrecoverable read errors

1 per 10

bits read, max

Annualized Failure Rate (AFR)

0.80% (nominal power, 25°C ambient temperature)

Contact start-stop cycles

50,000 cycles

(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)

Warranty

To determine the warranty for a specific drive, use a web browser to access the fol-

lowing web page:

http://www.sea

gate.com/support/service/

From this page, click on the “Verify Your Warranty” link. You will be asked to provide

the drive serial number, model number (or part number) and country of purchase.

The system will display the warranty information for your drive.

Preventive maintenance

None required.