Hi, Here my scenario : I will have a small cluster (4 nodes) with 4 (4 TB) OSD's per node. I will have OS installed on two SSD in raid 1 configuration. Is one of you have successfully and efficiently a Ceph cluster that is built with Journal on a separate partition on the OS SSD's? I know that it may occur a lot of IO on the Journal SSD and I'm scared of have my OS suffer from too much IO. Any background experience? Martin -- Martin Catudal Responsable TIC Ressources Metanor Inc Ligne directe: (819) 218-2708 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com