Agreeing with this, expanding a RAID array is not necessarily impossible, with something like RAID 5, and the right RAID setup, you could theoretically add an identical disk without wiping it all in the rebuild. RAID 1, you’ll 100% need to copy the data somewhere that isn’t the 2/4 disks in the meantime. In an environment where storage is expensive, RAID 1 is not suitable imo.
ZFS makes it so easy though. Throw a mismatched disk in? No big deal, it’s in your pool now. Want double parity for extra peace of mind? You can do that. It self-heals so you don’t need fsck, its maximum limits are too big to realistically matter on human scales, and the documentation on it is pretty good.
Suddenly cutting off a lot of trade suddenly is a stupid and reckless move that would hurt people in their countries as much as it would hurt the US. It’s basically the same behavior as Trump with his absurd tariffs, banning trade with a country, and taxing people obscenely to buy things from that country mostly work out to the same effects in practice.
Incentivizing other trade partners, and maybe slowly disincentivizing the US makes a lot of sense though. Maybe it made more sense years ago, but as they say, if the best time was yesterday, the next-best time is today.