With a RACK failure domain, you should be able to have an entire rack powered down without noticing any major impact on the clients. I regularly take down OSDs and nodes for maintenance and upgrades without seeing any problems with client IO.
On Tue, Feb 12, 2019 at 5:01 AM M Ranga Swami Reddy <swamire...@gmail.com> wrote: > Hello - I have a couple of questions on ceph cluster stability, even > we follow all recommendations as below: > - Having separate replication n/w and data n/w > - RACK is the failure domain > - Using SSDs for journals (1:4ratio) > > Q1 - If one OSD down, cluster IO down drastically and customer Apps > impacted. > Q2 - what is stability ratio, like with above, is ceph cluster > workable condition, if one osd down or one node down,etc. > > Thanks > Swami > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
