Seagate Video 2.5 Product Manual, Rev. H 17
Drive Specifications
2.11 Reliability
2.11.1 Annualized Failure Rate (AFR)
The product will achieve an Annualized Failure Rate (AFR) of 0.55% when operated in an environment of ambient air temperatures of 25°C.
Operation at temperatures outside the specifications in Section 2.8, Environmental Specifications may increase the product AFR. AFR is a
population statistics that is not relevant to individual units.
AFR specifications are based on the following assumptions for consumer electronics 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 2.8, Environmental Specifications may reduce the product reliability.
• Normal I/O duty cycle for consumer electronics environments. Operation at excessive I/O duty cycle may degrade product reliability.
The consumer electronics environment of power-on-hours, temperature, and I/O duty cycle affect the product AFR. The AFR will be degraded if
used in a enterprise application
2.11.2 Data loss under power interruption with write cache enabled
Drive preserves its data during all operations except in cases where power to the drive is interrupted during write operations. This could result in
either an uncorrected data error being reported, or the entire sector/track becoming unreadable. This can be permanently recovered by rewriting
to the same location on the drive. Additionally any data present in the DRAM buffer will not be written to the disk media, additionally, the drive will
not be able to return the original data.
In order to prevent this data loss, the host should issue a standby immediate or flush cache command before a controlled power off operation to the
drive.
Non-recoverable read errors 1 per 10
14
bits read, max
Load/Unload (U/UL)
25°C, 50% relative humidity
600,000 software-controlled power on/off cycles
20,000 hard power on/off cycles
Rated Workload Average annualized workload rating: <180 TB/year.
The AFR specification for the product assumes the I/O workload does not exceed the average annualized
workload rate limit of 180 TB/year. Workloads exceeding the annualized rate may degrade the product
AFR and impact reliability as experienced by the particular application. The average annualized work-
load rate limit is in units of TB per calendar year.
Warranty To determine the warranty for a specific drive, use a web browser to access the following web page:
http://www.sea
gate.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 dis-
play the warranty information for the drive.
To Next Page
Loading...
