On 12/19/2013 08:39 PM, Wolfgang Hennerbichler wrote:
On 19 Dec 2013, at 16:43, Gruher, Joseph R <joseph.r.gruher@xxxxxxxxx> wrote:
It seems like this calculation ignores that in a large Ceph cluster with triple replication having three drive failures doesn't automatically guarantee data loss (unlike a RAID6 array)?
not true with RBD images, which are potentially striped across the whole cluster.
You could always increase the order so that you end up with 64MB objects
instead of 4MB objects.
This would be order 26 instead of 22. You would have less objects, but
you will loose more data if you loose one PG holding that object.
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