Choosing the more reliable data storage for your project

Here is a table representing the failure probability of each data storage used:

Please note that the reliability of Hardware RAID and Soft RAID mentioned here includes human error and software bugs. Note that in the best case the failure probability per year for these system is around 8% for soft RAID and 2% for hardware RAID.

Please note that SSD disk should be changed maximum every 2 year in order to guaranty reliability.

Thus, for project starting with small amount of data (< 500Go) prefer one SSD. For projects with an important amount of data (> 500 Go), pick a hardware RAID and more than four SSD (Case 1) or use redundant NEO on SSDs without RAID.

Further Reading: 

Les taux de retour des composants (11), Les SSD, hardware.fr
You'll soon get 10TB SSDs thanks to new memory tech, Engadget
SSD stress testing finds Intel might be the only reliable drive manufacturer, ExtremeTech
The SSD Endurance Experiment: They're all dead, The Tech Report
Facebook's SSD findings: Failure, fatigue and the data center
A Large-Scale Study of Flash Memory Failures in the Field (Long paper)
SSD reliability in the real world: Google's experience

Recommendations for SSD Brands and Models ( updated on 18/03/2016)

• If we favour reliablity, Intel SSD 530 or Samsung 840 (EVO or Pro)
• If we favour performance (but 10 times less reliable), Samsung 850 Pro

References:

• Samsung 850 Pro is the best SSD choice for performance, but not reliability.
• Intel is still the best for reliability.