Ceph

Ceph koosneb järgnevatest komponentidest

1. Ceph OSD ( Object Storage Daemons ) storage data in objects , manages data replication , recovery , rebalancing and provides stage information to Ceph Monitor. Soovitatav on omada 1 OSD iga füüsilise ketta kohta.
2. Ceph MON ( Monitors ) maintains overall health of cluster by keeping cluster map state including Monitor map , OSD map , Placement Group ( PG ) map , and CRUSH map. Monitors receives state information from other components to maintain maps and circulate these maps to other Monitor and OSD nodes.
3. Ceph RGW ( Object Gateway / Rados Gateway ) API liides, ühilduv Amazon S3 ja openstacki swiftiga.
4. Ceph RBD ( Raw Block Device ) Blokkseadmed virtuaalmasinatele, sisaldab snapshottimist, provisioneerimist ja pakkimist.
5. CephFS ( File System ) hajus POSIX NAS storage.

http://ceph.com/docs/master/start/quick-ceph-deploy/