Seagate 300 GB Hard Disk STM3300622A Manual De Usuario
Los códigos de productos
STM3300622A
DiamondMax 20 PATA Product Manual, Rev. A
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 0.34% (MTBF of 0.7 million hours) when oper-
ated in an environment of ambient air temperatures of 25
ated in an environment of ambient air temperatures of 25
°
C. Operation at temperatures outside the specifica-
tions in Section 2.9 may increase the product AFR (decrease MTBF). AFR and MTBF are population statistics
that are not relevant to individual units.
that are not relevant to individual units.
AFR and MTBF specifications are based on the following assumptions for desktop personal computer environ-
ments:
ments:
• 2400 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 oower-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.
product AFR and MTBF. The AFR and MTBF will be degraded if used in a enterprise application.
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 as tested by TUV North America.
of IEC950 and EN 60950 as tested by TUV North America.
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 (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.
tromagnetic 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.
Seagate uses an independent laboratory to confirm compliance with the EC directives specified in the previous
paragraph. 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
paragraph. 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
Nonrecoverable read errors
1 per 10
14
bits read, max
Annualized Failure Rate (AFR)
0.34% (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)
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
Warranty
3 years on distribution units.
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.
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.