Seagate BarraCuda Product Manual, Rev. H
15
2.12
Reliability
2.12.1 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.
Nonrecoverable 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: <55 TB/year.
The specifications for the product assumes the I/O workload does not exceed the average annualized
workload rate limit of 55 TB/year. Workloads exceeding the annualized rate may degrade and impact
reliability as experienced by the particular application. The average annualized workload 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.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.
