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OpenStack cloud environments demand strong storage performance to handle the requests of end users. Software-based distributed storage can provide this performance while also providing much needed flexibility for storage resources.
In our tests, we found that Red Hat Storage Server better handled small-file IO workloads than did Ceph Storage, handling up to two times the number of files per second in some instances. The smallfile tool we used simulated users performing actions on their files to show the kind of end-user performance you could expect using both solutions at various node, VM, and thread counts.
These results show that Red Hat Storage Server can provide equivalent or better performance than Ceph Storage for similar workloads in OpenStack cloud environments, which can help users better access the files they keep in the cloud.