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This is the legal document that outlines the responsibilities and procedures for technical contributions to the Ceph project. This document was adopted February 12th 2026 by the Ceph Steering Committee as part of the reorganization of the Ceph Foundation. This .rst was derived (verbatim) from the PDF adopted by the CSC. AI-Assisted: with some formatting corrects, this was generated by AI from the PDF Signed-off-by: Patrick Donnelly <pdonnell@ibm.com>
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=================
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Welcome to Ceph
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=================
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Ceph delivers **object, block, and file storage in one unified system**.
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.. warning::
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:ref:`If this is your first time using Ceph, read the "Basic Workflow"
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page in the Ceph Developer Guide to learn how to contribute to the
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Ceph project. (Click anywhere in this paragraph to read the "Basic
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Workflow" page of the Ceph Developer Guide.) <basic workflow dev guide>`.
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.. note::
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:ref:`If you want to make a commit to the documentation but you don't
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know how to get started, read the "Documenting Ceph" page. (Click anywhere
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in this paragraph to read the "Documenting Ceph" page.) <documenting_ceph>`.
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.. container:: columns-3
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.. container:: column
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.. raw:: html
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<h3>Ceph Object Store</h3>
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- RESTful Interface
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- S3- and Swift-compliant APIs
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- S3-style subdomains
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- Unified S3/Swift namespace
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- User management
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- Usage tracking
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- Striped objects
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- Cloud solution integration
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- Multi-site deployment
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- Multi-site replication
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.. raw:: html
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<h3>Ceph Block Device</h3>
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- Thin-provisioned
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- Images up to 16 exabytes
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- Configurable striping
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- In-memory caching
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- Snapshots
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- Copy-on-write cloning
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- Kernel driver support
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- KVM/libvirt support
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- Back-end for cloud solutions
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- Incremental backup
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- Disaster recovery (multisite asynchronous replication)
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.. container:: column
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.. raw:: html
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<h3>Ceph File System</h3>
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- POSIX-compliant semantics
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- Separates metadata from data
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- Dynamic rebalancing
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- Subdirectory snapshots
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- Configurable striping
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- Kernel driver support
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- FUSE support
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- NFS/CIFS deployable
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- Use with Hadoop (replace HDFS)
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.. container:: columns-3
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.. container:: column
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See `Ceph Object Store`_ for additional details.
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.. container:: column
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See `Ceph Block Device`_ for additional details.
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.. container:: column
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See `Ceph File System`_ for additional details.
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Ceph is highly reliable, easy to manage, and free. The power of Ceph
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can transform your company's IT infrastructure and your ability to manage vast
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amounts of data. To try Ceph, see our `Getting Started`_ guides. To learn more
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about Ceph, see our `Architecture`_ section.
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.. _Ceph Object Store: radosgw
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.. _Ceph Block Device: rbd
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.. _Ceph File System: cephfs
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.. _Getting Started: start
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.. _Architecture: architecture
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.. toctree::
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:maxdepth: 3
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:hidden:
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start/index
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install/index
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cephadm/index
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rados/index
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cephfs/index
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rbd/index
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radosgw/index
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mgr/index
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mgr/dashboard
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monitoring/index
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api/index
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architecture
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Developer Guide <dev/developer_guide/index>
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dev/internals
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governance
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Technical Charter <technical-charter>
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foundation
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ceph-volume/index
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crimson/crimson
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releases/general
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releases/index
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security/index
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hardware-monitoring/index
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Glossary <glossary>
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Tracing <jaegertracing/index>
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