On Thu, Mar 21, 2013 at 2:12 AM, Sebastien Han
<sebastien....@enovance.com> wrote:
>
> Hi,
>
> Storing the image as an object with RADOS or RGW will result as a single big 
> object stored somewhere in Ceph. However with RBD the image is spread across 
> thousands of objects across the entire cluster. At the end, you get way more 
> performance by using RBD since you intensively use the entire cluster, with 
> the object solution you only request one big object from a single machine so 
> you get less performance.
>

It used to work like this, but since bobtail it's not true anymore.
RGW chunks objects.

Yehuda
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