This article focuses on the performance of RHEL OSP​ 6 Cinder volumes on​ Red Hat Ceph Storage (RHCS) 1.3 for three basic I/O workloads; large-file sequential, large-file random, and small-file. It demonstrates scalability as the environment grows from 4 to 8​ RHCS OSD nodes as well as 8 to 16 RHEL-OSP compute nodes with up to 32 VMs per host. Additionally, it compares the I/O performanc...