Paul Meehan gives an introduction to Openstack Storage Systems on virtualizationsoftware.com:
Openstack should present an opportunity not only for Hosting providers offering hosted Private Cloud or Public Cloud Services, but also for Enterprises, to run their own Virtualization platforms or Private Clouds.
What is hugely significant is that there is already an end-to-end solution stack that will compete with Amazon Web Services, driven entirely by the Open Source Community, with a little sprinkling of vendor dust.
This is an awesome introduction on how the Openstack Storage System works.
Read the full post here: Introduction to Openstack Storage Systems