Seagate SV35.5 SERIES SATA ST31000525SV - Manual (Page 21)

SV35.5 Series SATA Product Manual, Rev. C 15
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 oper-
ated 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 rel-
evant 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 consumer electronics environment of power-on-hours, temperature, and I/O duty cycle affect the product
AFR. The AFR will be degraded if used in a enterprise application.
2.13 Agency certification
2.13.1 Safety certification
These products are certified to meet the requirements of UL60950-1, CSA60950-1 and EN60950 and so
marked as to the certify agency.
2.13.2 Electromagnetic compatibility
Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Elec-
tromagnetic Compatibility Directive (2004/108/EC) as put into place 20 July 2007. 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.
Drives are tested in representative end-user systems. Although CE-marked Seagate drives comply with the
directives when used in the test systems, we cannot guarantee that all systems will comply with the directives.
The drive is designed for operation inside a properly designed enclosure, with properly shielded I/O cable (if
necessary) and terminators on all unused I/O ports. Computer manufacturers and system integrators should
confirm EMC compliance and provide CE marking for their products.
Nonrecoverable read errors 1 per 10 14 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: 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.