Hi Howard, be default each OSD is weighed based on its capacity automatically. So the smaller OSDs will receive less data than the bigger ones. Be careful though in this case to properly monitor the utilization rate of all OSDs in your cluster so that one of them does not reach the odd_full ratio Read this link that will help you get e better view on Ceph data placement mechanisms. Cheers JC > On Jan 31, 2015, at 14:39, Howard Thomson <hat@xxxxxxxxxxxxxx> wrote: > > Hi All, > > I am developing a custom disk storage backend for the Bacula backup > system, and am in the process of setting up a trial Ceph system, > intending to use a direct interface to RADOS. > > I have a variety of 1Tb, 250Mb and 160Mb disk drives that I would like > to use, but it is not [as yet] obvious as to whether having differences > in capacity at different OSDs matters. > > Can anyone comment, or point me in the right direction on > docs.ceph.com ? > > Thanks, > > Howard > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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