Software-defined storage (SDS) is the way of the future for enterprise − and Ceph will dominate SDS.

SDS as a concept — policy-based data storage provisioning and management independent of underlying hardware — is driven not only by enterprises’ eternal need to reduce costs but also by the desire to enable the wide range of emerging capabilities like distributed, scale-out storage for easy growth and automatic redundancy and replication for data protection, as well as the natural repulsion toward vendor lock-in.

Read more here: Storage Wars Part 1: SDS and the inevitability of Ceph by Phil Straw, CEO.