data distribution

Hello, I have a new installation of proxmox on my scaleway cloud. This server has two ssd of 1TB. However I can only see the vmdata and local which are 50 gb and 900gb. How can I utilize the other 1 TB disk?

Note: This is more of an effort to understand the system works, than to get support. I know PVE 5 is not supported anymore... I have a 7 node cluster which is complaining that: root@s1:~# ceph -s cluster: id: a6092407-216f-41ff-bccb-9bed78587ac3 health: HEALTH_WARN 1...