Seagate ST2000VX000 SV35.2 Series SATA Product Manual - Page 23

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 desktop personal computer 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 Annualized Failure Rate (AFR) Contact start-stop cycles Warranty 1 per 1014 bits read, max 0.80% (nominal power, 25°C ambient temperature) 50,000 cycles (at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle) To determine the warranty for a specific drive, use a web browser to access the following web page: www.seagate.com/support/service/ Preventive maintenance 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. None required. 2.13 Agency certification 2.13.1 Safety certification The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections of IEC950 and EN 60950. 2.13.2 Electromagnetic compatibility Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Electromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and the immunity levels are defined by EN 55024. SV35.2 Series Serial ATA Product Manual, Rev. D 17