User Manual

Seagate Exos 7E2000 v3 SAS Product Manual, Rev. B 20
4.2 Reliability and service
The reliability of Exos 7E2000 v3 disk drives can be enhanced by ensuring that the drive receives adequate cooling. Section 5.0 provides
temperature measurements and other information that may be used to enhance the service life of the drive. Section 9.2 provides recommended air-
flow information.
4.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)
The production disk drive shall achieve an annualized failure-rate of 0.44% (MTBF of 2,000,000 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 <= 40C
• Ambient dew point temperature <= 26C
•Typical I/O 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.
4.2.2 Preventive maintenance
No routine scheduled preventive maintenance is required.
4.2.3 Hot plugging the drive
When a disk is powered on by switching the power or hot plugged, the drive runs a self test before attempting to communicate on its’ interfaces.
When the self test completes successfully, the drive initiates a Link Reset starting with OOB. An attached device should respond to the link reset. If
the link reset attempt fails, or any time the drive looses sync, the drive initiated link is reset. The drive will initiate link reset once per second but
alternates between port A and B. Therefore each port will attempt a link reset once per 2 seconds assuming both ports are out of sync.
If the self-test fails, the drive does not respond to link reset on the failing port.
4.2.4 S.M.A.R.T.
S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that indicate
imminent drive failure and is designed to provide sufficient warning of a failure to allow an application to back up the data before an actual failure
occurs.
Nonrecoverable read errors 1 per 10
15
bits read, max
Annualized Failure Rate (AFR) 0.44% (nominal power, 40°C case temperature)
Load unload cycles 300,000 (25°C, 50% rel. humidity) (600,000 design life testing)
Maximum Rated Workload <550TB/year
Workloads exceeding the annualized rate may degrade the drive MTBF and impact product reliability. The
Average 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).
Warranty 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 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.
Preventive maintenance None required.
Note
It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard,
shorting of PCBA to ground, or ESD potential hazard is presented during the hot connect/disconnect
operation. Discharge the static electricity from the drive carrier prior to inserting it into the system.
Caution
The drive motor must come to a complete stop prior to changing the
plane of operation. This time is required to insure data integrity.