If you have at least 2 hosts per room, you can use a k=3 and m=3 and place 2 shards per room (one on each host). So you'll need 3 shards to read the data : you can loose a room and one host in the two other rooms and still get your data.It covers a double faults which is better. It will take more space : your proposal uses 1,5 x Data; this one uses 2 x Data _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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