ceph troube

Hi everyone! I have an issue with my Proxmox 4. I have a cluster proxmox on 4 servers with using Ceph. I have a 4 monitors and 8 disks (osd). I have mount 8 disks on 2 server (cause in ceph deployment requirements on https://pve.proxmox.com/wiki/Ceph_Server wrote that need to use at lest 4 disk...