Official Docs:

Administration Guide:

https://docs.openstack.org/admin-guide/

Operation Guide:

https://docs.openstack.org/ops-guide/

Installation:

Openstack组件部署 — Overview和前期环境准备

http://blog.csdn.net/jmilk/article/details/51627186

Concepts Discussions:

What is the difference between Block storage and Object storage?

http://blog.csdn.net/miller_lover/article/details/40978033

Object Storage versus Block Storage: Understanding the Technology Differences

https://www.druva.com/blog/object-storage-versus-block-storage-understanding-technology-differences/