

You’ll need to read the documentation to understand its concepts first. You don’t use mkfs but zpool to create a pool then use zfs to create the fs on it. ZFS is usually used with some sort of raid configuration so most doc will show this but you can create a pool with no replication using a single drive.



Depends on what you need a VPN for.
I don’t know them but they seems to be from Estonia marketing themselves for evading censorship. Are you in a country that censor VPN? If not why do you think the tradeoff might be worth? The 2 hops should have an impact on bandwidth and latency and there is probably no port forwarding.
Using a VPN is just moving your trust from your ISP to the VPN. Why would you trust a VPN you know nothing about giving them access to all your internet traffic?