Replacing your storage array with Ceph

Ceph should not be compared with a traditional scale-up storage array. It is fundamentally different, and trying to shoehorn Ceph into that role using existing knowledge, infrastructure, and expectation will lead to disappointment. Ceph is Software Defined Storage (SDS) whose internal data movements operate over TCP/IP networking. This introduces several extra layers of technology and complexity compared with a SAS cable at the rear of a traditional storage array.