Hi Adrian, For maintenance, this is the procedure I’d follow: https://ceph.io/planet/how-to-do-a-ceph-cluster-maintenance-shutdown/ Difference between maintenance and emergency; I’d probably set all the flags as per maintenance but down the OSD’s at the same time followed by all the mons/admin. If you scripted it, there’s probably not a lot of difference in the time take to shutdown. A. Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Adrian Sevcenco<mailto:Adrian.Sevcenco@cern.ch> Sent: 18 March 2021 19:26 To: ceph-users<mailto:ceph-users@ceph.io> Subject: [ceph-users] howto:: emergency shutdown procedure and maintenance Hi! What steps/procedures are required for emergency shutdown and for machine maintenance? Thanks a lot! Adrian