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Seagate hard drives are most reliable
To be able to successfully answer your question please read the case study of Backblaze
https://www.extremetech.com/extreme/175089-who-makes-the-most-reliable-hard-drives
As of the end of December 2014, Backblaze had 15,528 Seagate drives, 22,902 Hitachi drives, 1,174 Western Digital drives, and 47 Toshiba drives. These drives are not all the same age — some are several years old, while many were installed in the past year, including thousands of brand new 4TB and even a few 6TB models.
The odd numbers are because Backblaze basically buys whatever drive offers the most competitive dollar-per-gigabyte ratio, with reliability being a secondary factor. For most of the last five years, Seagate and Hitachi have offered the best price-per-gig, with Western Digital Red and Toshiba DT01ACA drives only recently becoming viable (although there are too few Toshiba drives to draw any conclusions yet).
HGST is the reigning champion of hard drives when it comes to reliability, according to cloud backup provider Backblaze, which should know since it deploys tens of thousands of drives to run its unlimited backup service.
Backblaze posted an interesting blog that examines the failure rate of the hard drives it uses in its data centers. The company ran a similar test last year and found that its HGST drives were running the longest compared to other brands, but when it came to performance, it was hard to beat Seagate
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