Snaps and Flatpaks auto updates automatically
Nope. Firefox does not, because either Firefox is running, or the PC is down or sleeping. So I have to close Firefox, open a shell, update that snap removed, and restart Firefox. Which pisses me off to no end, apart from the point that snaps are a waste of resources and a bad idea in general.
If the disks are of the same type, check their serial numbers.
Once I set up a RAID with four 120GB disks. Back then, they were basically close to cutting edge technology as a 16TB drive would be today, and expensive as f-ck. Within a week, two disks failed, bringing the raid down. One failed in the evening, the other in the morning. When I called about warranty, I noticed that all four disks were within ±20 in their serial numbers, and got suspicious. I got the two drives replaced (with different, wide spread serial numbers), set up the RAID again, only to have a fail within less than ten days again - another one of the original set dead. This time I asked not only for a replacement of the next dead one, but also of the fourth, which was declined. I cut my losses and set up a way smaller RAID with only three disks. The fourth is in a drawer somewhere, wit a big red warning sticker.