You didn't ask for advice so take it or ignore it.
IMHO, in this day and age, there is no reason not to run raid 1. Two
disks, identially partitioned, each parition set up as a raid 1
partition with two copies.
When a disk dies, you remove it from all the raid partitions, pop in a
new disk, partition it, add the new partitions back into the raid
partitions and raid rebuilds the copies.
Except for taking the system down to replace the disk (assuming you
don't have a third installed as a spare) you just keep running as if
nothing has happened.