User Manual

Constellation.2 Serial ATA Product Manual, Rev. G 24

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 0.62% (Mean Time Between Failures - MTBF - of 1.4 Mil-

lion hrs) 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 2.9 may increase the product 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 environ-

ments:

• 8760 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 2.8 will increase the product AFR and decrease MTBF.

2.13 Agency certification

2.13.1 Safety certification

The drives are recognized in accordance with UL 60950-1 as tested by UL, CSA 60950-1 as tested by CSA, and EN60950-

1 as tested by TUV.

The security features of Self-Encrypting Drive models are based on the “TCG Storage Architecture Core Specification”

and the “TCG Storage Workgroup Security Subsystem Class: Enterprise_A” specification with additional vendor-

unique features as noted in this product manual.

2.13.2 Electromagnetic compatibility

Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Electromag-

netic 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.

Seagate uses an independent laboratory to confirm compliance with the EC directives specified in the previous para-

graph. 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 com-

pliance and provide CE marking for their products.

Nonrecoverable read errors 1 per 10

bits read, max

Annualized Failure Rate (AFR) 0.62% (nominal power, 40°C case temperature)

Load unload cycles 300,000 cycles

Warranty To determine the warranty for a specific drive, use a web browser to access the following

web page:

http://www.seagate.com/services-software/seagate-recovery-services/recover/

From this page, click on the “Is my Drive under 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.