<div dir="ltr">Hello Remo,<div><br></div><div>That is quite an open ended question :) If you could share a bit more about your use case, then it would be easier to provide more detailed information, but I'll try to cover some of the basics.</div>
<div><br></div><div>First, a disclaimer. I am one of the original Openstack Swift developers, so I *may* be a bit biased.</div><div><br></div><div>Both Swift and Ceph are capable object storage systems. Swift focuses purely on object storage, while Ceph provides object, block and filesystem storage. This leads to, what I believe is, the biggest fundamental difference between Swift and Ceph. Since Ceph also provides block and filesystem storage, it chooses consistency and partition tolerance over availability. Swift was designed to be eventually consistent (similar to S3) favoring availability and partition tolerance over consistency. If you are not familiar with the CAP theorem, then I suggest starting with the Wikipedia article about it [1] (oh and btw, all the images that you see on Wikipedia are stored in a Swift cluster ;))</div>
<div><br></div><div>I can't speak directly to the performance characteristics of Ceph, but I gave a talk [2] at the Hong Kong summit where I go into quite a bit of detail about how well swift has performed at Rackspace over the past 5 years, and how far we have been able to scale it. Openstack Swift is also in use by a substantial number of other companies and institutions all over the world.</div>
<div><br></div><div>All of that said, you can't trust anything you read on the internet, or even me. If you are interested in running either Swift or Ceph, then I would recommend evaluating your use case with both systems.</div>
<div><br></div><div>--</div><div>Chuck</div><div><br></div><div>[1] <a href="http://en.wikipedia.org/wiki/CAP_theorem">http://en.wikipedia.org/wiki/CAP_theorem</a></div><div>[2] <a href="https://www.youtube.com/watch?v=YxnFUQHIwNs">https://www.youtube.com/watch?v=YxnFUQHIwNs</a></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, May 29, 2014 at 9:34 PM, Remo Mattei <span dir="ltr"><<a href="mailto:remo@italy1.com" target="_blank">remo@italy1.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all does anyone have done any testing or comparison between swift and ceph I want to get some others people prospectives.<br>
<br>
Thanks.<br>
<br>
Inviato da iPhone ()<br>
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