Hi We have 3 servers for replica 3 with failure domain datacenter: -1 4437.29248 root default -33 1467.84814 datacenter 714 -69 69.86389 host ceph-flash1 -34 1511.25378 datacenter HX1 -73 69.86389 host ceph-flash2 -36 1458.19067 datacenter UXH -77 69.86389 host ceph-flash3 We made a mistake when we moved the servers physically so while the replica 3 is intact the crush tree is not accurate. If we just remedy the situation with "ceph osd crush move ceph-flashX datacenter=Y" we will just end up with a lot of misplaced data and some churn, right? Or will the affected pool go degraded/unavailable? Mvh. Torkil -- Torkil Svensgaard Sysadmin MR-Forskningssektionen, afs. 714 DRCMR, Danish Research Centre for Magnetic Resonance Hvidovre Hospital Kettegård Allé 30 DK-2650 Hvidovre Denmark Tel: +45 386 22828 E-mail: torkil@drcmr.dk