"Disk drive reliability: What we've learned from a billion hours"
http://www.zdnet.com/article/what-we...isk-drive-use/

My summary:
Hard drive reliability is improving.
Seems like average Seagate reliability has improved to match Toshiba.
HGST drives continue to shine, 3x better than the nearest competitor (for a slightly higher price).
If I need a high capacity hard drive, I'm buying HGST.

Deep details:
https://www.backblaze.com/blog/hard-...stats-Q1-2016/