[paranoidrobot]

> How often does the memory card break on a Raspberry?

I have no data on this, only anecdata - since I've started being interested in the Home Assistant project, I've seen countless problems with people who've done an upgrade, rebooted their HA Pi and had some kind of Disk IO issue because the card died.

As I understand it, it's the constant logging to disk for logfiles and databases that ends up killing MicroSD cards. It seems to be particularly bad for clones and cheap ones off eBay/Amazon. It's still apparently a problem even for high quality "endurance" MicroSD cards.