Please note that many customers are not familiar with TrueNas and do not know how ZFS works. An inexperienced user does not know the terms pool, vdev and does not understand the principle of operation of z1, z2, z3...
Therefore, when creating pools, it would be advisable to go through the wizard, where it will ask me whether I want to create a pool focused on performance without data protection or focused on data protection, where the performance will be lower.