We used traditional fiber based SAN storages before we started using Ceph. The main reasons for switching to Ceph were:

• Ability to provide block as well as object storage
• Open source system
• Scalability: Performance actually improves as we scale the cluster bigger

We deal with various Red Hat products. 

Previously we used a product that we developed in-house.

None. This was a pilot project and it has worked out.

I have used traditional storage on much smaller scales: ZFS, SVM, VxVM, and NetApp. They do not fit the use case and demands of a growing Cloud infrastructure.

I have used many solutions but not as extensively as Ceph. I switched to Ceph because of its architecture and because it is a one-stop shop when it comes to storage.

We had no previous solution. My first contact with ephemeral storage is through Ceph.