#1 of 25 shared storage platforms for virtualization · Updated October 2026
Ceph review 2026
Ceph (upstream) · Dependable builder
Ceph ranks #1 of 25 shared storage platforms for virtualization in the Virtualization Storage Ledger 2026, with a Ledger Index of 67.4 out of 100. The open-source engine inside IBM Storage Ceph, OpenShift Data Foundation, croit and Proxmox VE: block, file and object at any scale, with no vendor of its own.
Scores
Source: Virtualization Storage Ledger 2026, edition 2026-10-16. How each score works: methodology.
Pros
- Hardware and deployment freedom5/5
- Resilience and HA4.5/5
- Scale and topology4.5/5
- Data services core4/5
Cons
No domain scores 2.5 or lower out of 5. Check the lock-in and buying notes below.
What the Ledger says
Ceph scores as the deepest engine in this group because almost every capability a packaging vendor sells already exists upstream: erasure coding with FastEC, stretch mode, NVMe/TCP and SMB gateways, cephadm and Rook. What it lacks is exactly what the products add: a support contract, a vSphere plug-in, FIPS builds, a two-node option and anyone to call when the CephX keys need renewing. The security line sits at 3.5 because the 2026-08-19 fixes repaired a bypass in the authentication protocol itself and the project has no FIPS validation or anomaly detection. The one thing to check before relying on it is which stable series your packaging vendor ships and how far behind upstream its point releases run, because Squid reaches end of life around 2026-10-31.
Ceph uses no AI in its own operation and offers none to operators; its role in AI is as the object and file store under other platforms. Agents can drive it through the REST API, and nothing more specific exists upstream.
Capability by area
Buying, lock-in and release record
Technical lock-in(lower is better)
- Formats0.5
- Standard RBD images (export to raw or qcow2), POSIX file system, S3-compatible object
- Export path1.5
- rbd export, qemu-img and the NFS, SMB and NVMe/TCP gateways let data be copied out; no one-step export
- Stack coupling2.5
- Needs Ceph clients in the kernel or QEMU, or a gateway; VMware and Hyper-V reach it only through gateways
- Hardware / cloud coupling0
- Any x86 or Arm server, fully offline
- Skills and tooling coupling2.5
- Specialised operations skills; tooling (cephadm, Rook, dashboard) is open
Release credibility
- Cadence3.5
- Published annual cycle and four to six week point releases; the named release has landed between August and November since Quincy, and Squid went 11 months between 19.2.3 and 19.2.4
- Roadmap transparency4
- Open tracker, public release notes and developer summits; no dated roadmap, Umbrella has no published date
- Say-do3.5
- Features announced in release notes ship with the release; Crimson and SeaStore have stayed previews since 2024-09
- Velocity4.5
- Several substantive capabilities per named release: MSR rules and IAM accounts in Squid, FastEC, SMB and NVMe-oF failover in Tentacle
- Lifecycle stability3.5
- About two years of backports per series, upgrades tested from the last two releases, no downgrade; the Reef 18.2.5 regression needed a hotfix and the Squid point-release gap broke the stated rhythm
Partners and services
- Partner programme openness4
- Anyone may build, package and sell support on it; Ceph Foundation membership is open in three tiers; no vendor programme with margins or certification
- Multi-tenancy and self-service3
- Pools, RBD namespaces, CephFS subvolumes and RGW accounts with IAM (Squid); no portal or metering
- API and infrastructure-as-code3.5
- REST manager API and dashboard; Rook for Kubernetes; Terraform and Ansible content is community-maintained
- Skills and certification2
- No vendor-neutral certification found; training comes from the packaging vendors
Alternatives to Ceph
Questions about Ceph
Is Ceph any good?
Ceph ranks #1 of 25 shared storage platforms for virtualization in the Virtualization Storage Ledger 2026, with a Ledger Index of 67.4 out of 100. Its strongest areas are hardware and deployment freedom, resilience and ha, scale and topology.
What are the best alternatives to Ceph?
The closest by Ledger Index are IBM Storage Ceph (66), Nutanix AOS (64.3), Storage Spaces Direct (62.8), OpenShift Data Foundation (62.3).
How much lock-in does Ceph bring?
Ceph scores 7 out of 25 on technical lock-in (lower is better). Export path: rbd export, qemu-img and the NFS, SMB and NVMe/TCP gateways let data be copied out; no one-step export.
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