Ceph
Ceph is open-source, software-defined storage that runs on a cluster of standard servers and disks. It stores data in a distributed way, with automatic replication, so data remains safe if a server or disk fails.
Ceph can present storage as:
- Block storage (like virtual disks)
- File storage (like a shared file system)
- Object storage (like S3 or Swift)
Scale out almost without limits by simply adding more servers and disks.