Hi Torben, > Is it allowed to have the scrub period cross midnight ? eg have start time at 22:00 and end time 07:00 next morning. Yes, I think that's what the way it is mostly used, primarily to reduce the scrub impact during waking/working hours. > I assume that if you only configure the one of them - it still behaves as if it is unconfigured ?? The begin and end hours default to 0 and 24 hours respectively, so setting one have an effect. E.g. setting the end hour to 6 will mean scrubbing runs from midnight to 6AM, or setting the start hour to 16 will run scrubs from 4PM to midnight. Cheers, Tom _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com