Reliability - Mean Time Between Failure; Storage; Warranty (For Standard Surveillance Hdd Models) - Seagate ST4000VX000 Product Manual

Drive Specifications

2.12 Reliability - Mean Time Between Failure

The product will achieve a Mean Time Between Failure Rate (MTBF) of 1,000,000 hours when operated in an environment
of ambient air temperatures of 25°C. Operation at temperatures outside the specifications shown in Section 2.9 may
decrease the product MTBF. MTBF is a population statistic that is not relevant to individual units.
• MTBF specifications are based on the following assumptions for NAS 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.
Operation at excessive I/O duty cycle may degrade product reliability. The NAS environment of power-on hours,
temperature, and I/O duty cycle affect the product MTBF. The MTBF will be degraded if used in an enterprise application.

2.12.1 Storage

Maximum storage periods are 180 days within original unopened Seagate shipping package or 60 days unpackaged
within the defined non-operating limits (refer to environmental section in this manual). Storage can be extended to 1 year
packaged or unpackaged under optimal environmental conditions (25°C, <40% relative humidity non-condensing, and
non-corrosive environment). During any storage period the drive non-operational temperature, humidity, wet bulb,
atmospheric conditions, shock, vibration, magnetic and electrical field specifications should be followed.

2.13 Warranty (for Standard Surveillance HDD models)

To determine the warranty for a specific drive, use a web browser to access the following web page:
http://www.seagate.com/support/warranty-and-replacements/
From this page, click on "Is my Drive under Warranty". Users 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 the drive.
Seagate NAS HDD and NAS +SRS HDD Product Manual, Rev. E 16