Seagate ST9160511NS Manuale Utente

18

Constellation Serial ATA Product Manual, Rev. D

The product shall achieve an Annualized Failure Rate - AFR - of 0.73% (Mean Time Between Failures - MTBF
- of 1.2 Million hours) when operated in an environment that ensures the HDA case temperatures do not 
exceed 40

°

C. Operation at case temperatures outside the specifications in Section 3.9 may increase the prod-

uct Annualized Failure Rate (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 business critical storage system 
environments:

• 8,760 power-on-hours per year.

• 250 average motor start/stop cycles per year.

• Operations at nominal voltages.

• Systems will provide adequate cooling to ensure the case temperatures do not exceed 40

°

C. Temperatures 

outside the specifications in Section 3.9 will increase the product AFR and decrease MTBF.

Nonrecoverable read errors

1 per 10

15

 bits read, max

Annualized Failure Rate (AFR)

0.73% (nominal power, 40°C case temperature)

Motor 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/www/en-us/support/warranty_&_returns_assistance

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.

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.

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.

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 
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.