sort of. It means you can lose 2 and have no data loss. But ceph will do it's best to protect you from dataloss by offlining the pool until the required number of chunks is up. See min_size here: https://docs.ceph.com/en/latest/rados/operations/pools/ ________________________________ From: Robert Sander <r.sander@xxxxxxxxxxxxxxxxxxx> Sent: 05 December 2023 09:20 To: ceph-users@xxxxxxx <ceph-users@xxxxxxx> Subject: Re: EC Profiles & DR CAUTION: This email originates from outside THG On 12/5/23 10:06, duluxoz wrote: > I'm confused - doesn't k4 m2 mean that you can loose any 2 out of the 6 > osds? Yes, but OSDs are not a good failure zone. The host is the smallest failure zone that is practicable and safe against data loss. Regards -- Robert Sander Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin https://www.heinlein-support.de<https://www.heinlein-support.de> Tel: 030 / 405051-43 Fax: 030 / 405051-19 Amtsgericht Berlin-Charlottenburg - HRB 220009 B Geschäftsführer: Peer Heinlein - Sitz: Berlin _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx