[humanpuff69]

It is well know that SSD are not reliable as HDD when talking about data storing. We use SSD as boot devices because THEY ARE FAST thanks to their flash-nand technologies. HDD can't compete because they use a technology based on cylinders and sectors that are read by a mechanical arm.

Every SSD sold comes with an assurance of I/O operations called TBW: for example my KINGSTON A400 120GB SSD has an assurance of 40TB of writable data!
That's a lot but when you exceeds that number you can except problems comings soon.

A 480GB SSD has a 160TB assurance!

Regarding running OS from RAM... you are right, when the OS preload ALL the data on RAM and then an unexcepted shutdown happens all the data will be lost. But you can also configure your distro you preload on RAM only system & applications file meanwhile your data partition is simply mounted and accessible from your USB.

well SSD doesnt suffer from vibration and shake like HDD does . it also doenst have moving part like HDD Does . so the term "ssd are not reliable as hdd" isnt true but the truth is it is kinda the same . HDD suffer from that vibration and moving part issue but SSD have write limit espescially the lower end one suffer more that uses TLC . the one that use MLC or SLC suffer less because store less data in a cell .

hdd suffer lot of damage from dropping but ssd is much more better at that except if it is too high that the pcb or the nand crack . hdd platter is more fragile than ssd nand