Ceph makes it easy to create multiple cluster on the same hardware with the naming of clusters. If you want a better insolation you can use LXC, for example to allow a different version of Ceph between your clusters.
For this you will need access to the physical disks from the container. You just allow access to the device with cgroup and create the device with mknod :
# Retrieve the major and minor number for a device : $ ls -l /dev/sda5 brw-rw---T 1 root disk 8, 5 janv. 26 18:47 /dev/sda5 $ mknod /var/lib/lxc/container-cluster1/rootfs/dev/sda5 b 8 5 $ echo "lxc.cgroup.devices.allow = b 8:7 rwm" >> /var/lib/lxc/container-cluster1/config