XCP-NG boot an VM Storage on the same disks in (2x) Raid1


I am planning on switching from Proxmox to xcp-ng. I would buy a HP MicroServer gen10+.
I would use two ssds as a boot mirror. I understand that would be a mdadm raid.

In the docs, they say that the space on the disk that is after the boot partition can be used a VM Storage. How big will the boot partition be?

Can I use the same SSDs for boot software Raid1 and a second partition on each disk as (manually set up) software Raid 1 for VM Storage?

Thanks, Sebastian

The install would need at least 46 GB of disk space minimum, 70 GB of disk space recommended. XCP-ng documentation