2.12Reliability
2.12.1Annualized 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
•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
Nonrecoverable read errors | 1 per 1014 bits read, max |
Annualized Failure Rate (AFR) | 0.80% (nominal power, 25°C ambient temperature) |
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|
Contact | 50,000 cycles |
| (at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle) |
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Warranty | To determine the warranty for a specific drive, use a web browser to access the fol- |
| lowing 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 |