calculation hdsize

Hello All, I have two NVMe M.2 SSD 256 Gb disks in my server and want to use them as a system mirrored disk. To do mirror I want to try via ZFS RAID1. I am a newbie in Linux and ZFS, so I doubt - what size of disk I should set while PVE installation? I mean the PVE installation's stage "Hard...

After hours of trying we have decided to post this. Proxmoix 6.21 installation works find if you do not specify the partitions sizes and go with default. However following the documentation: https://pve.proxmox.com/wiki/Installation If we make changes the installation leads into the following...