Email Storage with Ceph
summary
Deutsche Telekom migrates email storage off NFS onto Ceph (luminous), putting message objects into RADOS and keeping indexes/attributes in a local key‑value cache; hardware uses SSDs for journals and HDD OSDs. Current dataset is 49 million accounts holding about 1.3 PB and ~6.7 billion messages; tests run on a small cluster and full rollout is pending. Expected win is roughly 75% less I/O, target ~15 OSD nodes per site, and functional testing shows feasibility though production tuning (recovery, compaction, compression, delete semantics) remains underway.
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chapters (9)
- 0:00Introduction to email storage
- 5:22Challenges with current NFS setup
- 10:08Decision to build a new system
- 14:24Hardware and Ceph configuration
- 17:42Data center placement and replication
- 19:33Testing and validation phase
- 21:42Unsolved issues and optimizations
- 23:56Integration and production plans
- 25:22Conclusion and future outlook