The software described in this documentation is either no longer supported or is in extended support.
Oracle recommends that you upgrade to a current supported release.
- Block Device
A Ceph component that provides access to Ceph storage as a thinly provisioned block device. When an application writes to a Block Device, Ceph implements data redundancy and enhances I/O performance by replicating and striping data across the Storage Cluster.
Also known as a RADOS Block Device or RBD.
- Ceph OSD
A Ceph component that provides access to an OSD.
Also known as a Ceph OSD Daemon.
- Client
A host that can access the data stored in a Storage Cluster. A Ceph Client need not be a member node of a Storage Cluster.
- Monitor (MON)
A Ceph component used for tracking active and failed nodes in a Storage Cluster.
- Node
A system that is a member of a Storage Cluster.
- Object Gateway
A Ceph component that provides a RESTful gateway that can use the Amazon S3 and OpenStack Swift compatible APIs to present OSD data to Ceph Clients, OpenStack, and Swift clients. An Object Gateway is configured on a node of a Storage Cluster.
Also known as a RADOS Gateway or RGW.
- Object Storage Device (OSD)
Storage on a physical device or logical unit (LUN). Typically, data on an OSD is configured as a btrfs file system to take advantage of its snapshot features. However, other file systems such as XFS can also be used.
- Storage Cluster
A Ceph component that stores MON and OSD data across cluster nodes.
Also known as a Ceph Object Store, RADOS Cluster, or Reliable Autonomic Distributed Object Store.