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2.9
Reliability
2.9.1
Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)
The production disk drive shall achieve an annualized failure-rate of 0.35% (MTBF of 2,500,000 hours) over a 5 year
service life when used in Enterprise Storage field conditions as limited by the following:
• 8760 power-on hours per year.
• HDA temperature as reported by the drive <= 30°C
• Ambient wet bulb temp <= 26°C
• Typical workload
• The AFR (MTBF) is a population statistic not relevant to individual units
• ANSI/ISA S71.04-2013 G2 classification levels and dust contamination to ISO 14644-1 Class 8 standards (as measured at the
device)
The MTBF specification for the drive assumes the operating environment is designed to maintain nominal drive
temperature and humidity. Occasional excursions in operating conditions between the rated MTBF conditions and the
maximum drive operating conditions may occur without significant impact to the rated MTBF. However continual or
sustained operation beyond the rated MTBF conditions will degrade the drive MTBF and reduce product reliability.
Nonrecoverable read errors
Load unload cycles
Maximum Rated Workload
Warranty
Preventive maintenance
Seagate Exos X24 SATA Product Manual, Rev. A (Draft 1)
1 per 1015 bits read, max
600,000 cycles
Maximum rate of <550TB/year
Workloads exceeding the annualized rate may degrade the drive MTBF and impact product
reliability. The Annualized Workload Rate is in units of TB per year, or TB per 8760 power on
hours. Workload Rate = TB transferred * (8760 / recorded power on hours).
To determine the warranty for a specific drive, use a web browser to access the following
web page: www.seagate.com/support/warranty-and-replacements/.
From this page, click on the "Is my Drive under Warranty" link. The following are required to
be provided: the drive serial number, model number (or part number) and country of
purchase.The system will display the warranty information for the drive.
None required.
Drive specifications
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