Hello, On Thu, 15 Oct 2015 16:55:18 -0400 J David wrote: > In the Ceph docs, at: > > http://docs.ceph.com/docs/master/rados/deployment/ceph-deploy-osd/ > > It says (under "Prepare OSDs"): > > "Note: When running multiple Ceph OSD daemons on a single node, and > sharing a partioned journal with each OSD daemon, you should consider > the entire node the minimum failure domain for CRUSH purposes, because > if the SSD drive fails, all of the Ceph OSD daemons that journal to it > will fail too." > > This, of course, makes perfect sense. But, it got me wondering... > under what circumstances would one *not* consider a single node to be > the minimum failure domain for CRUSH purposes? > When you have a test cluster consisting just of node basically. Of course you would rather set the replication size to 1 in such a case and be done. ^o^ Christian -- Christian Balzer Network/Systems Engineer chibi@xxxxxxx Global OnLine Japan/Fusion Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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