Operating system in RAM

[Miss Sissy Princess]

IME SD card failure is rare. I've maybe had 4 cards die in over 6 years. The cards in my test systems get completely slammed with writes during development and abrupt power offs happen often.

I have been using Samsung PRO Endurance 64GB MicroSDHC cards in my various Pi-based servers (including moOde).  These are "specifically designed for video monitoring cameras including dash cams, surveillance & security cams, body cams, etc." They claim continuous HD video recording longevity of up to 25x that of conventional MicroSDHC cards.  I researched MicroSDHC cards for many hours (I'm "buy-curious" so I research every purchase to the extreme).  Independent tests show these cards to have good R/W speed, and much more consistent speed, when compared with conventional MicroSDHC cards.  While Sandisk also offers a high endurance MicroSDXC card, it is definitely a step down based on warranty (5 years for Samsung vs. 2 years for Sandisk), reputation, and anecdotal reports of failures and longevity.

All of those characteristics make the Samsung PRO Endurance 64GB (or any size -- I just think that, right now, that's the sweet spot for price/storage) MicroSDXC cards nearly ideal for use as Pi boot drives, especially where there is concern about write-induced failures.  



Note:  I am not affiliated with Samsung or any vendor of Samsung products.  Links provided are for the convenience of the reader and "clicks" of, or purchases from, those links do not benefit me, monetarily or otherwise.