You can set the metadata and data independently as RAID0, RAID1 or other levels depending on the number of disks and your desired level of data loss risk.
You need to point it at a directory that has the btrfs root subvolume mounted on it (subvolid=5) although I thought it gave a different error if that was your problem.
I was taught that it's rude to touch food with your hands. Most dishes that come with chips need the use of a knife and fork for the other items anyway, why put them down and grab one part of the food? Also, chips are supposed to be really hot.
I do this. I'm British and my American acquaintances laugh at me for doing so, but why does the hand you hold the fork in make any difference? It's not like there are left-handed and right-handed chips.
For current existing power stations, coal is cheapest of the fuels. The EIA numbers are here and here’s Statista research here on the historical cost of nat gas vs coal specifically
Using USA-only statistics in a thread about Slovakia and the UK is disingenuous at best.
You can set the metadata and data independently as RAID0, RAID1 or other levels depending on the number of disks and your desired level of data loss risk.