#17 of 21 S3-compatible object storage products · Updated October 2026
Qumulo review 2026
Qumulo Core S3 API · Sharp opportunist
Qumulo ranks #17 of 21 S3-compatible object storage products in the Object Storage Ledger 2026, with a Ledger Index of 54.4 out of 100. Qumulo Core adds a native S3 API to a file platform: Object Lock in compliance mode and a Veeam v13 claim, with no lifecycle rules or STS.
Scores
Source: Object Storage Ledger 2026, edition 2026-10-16. How each score works: methodology.
Pros
No domain scores 4 or higher out of 5.
Cons
- Ecosystem and openness1.5/5
- Lifecycle and tiering2/5
- S3 API fidelity2.5/5
What the Ledger says
Qumulo scores as a file platform that also speaks S3: the protocols, deployment and operations rows carry it, while the S3 API and immutability rows sit below the object-first products. The S3 surface is narrow by design, with no lifecycle rules, no STS, path-style addressing only, no SSE selection and Object Lock in compliance mode only. Durability and performance are grade C, because erasure coding and replication were not read for this edition and the throughput figure is a vendor claim. A buyer planning to use it as a backup target should confirm with Qumulo whether bucket default retention works and get the Veeam v13 certification record for the Core version they will run.
Qumulo's AI story is a set of named products on its website (NeuralCache, NeuralSearch, Helios AI Agent, Cloud AI Accelerator, Nexus) with no release note or GA date read for any of them. Until their status can be checked they score half a step to one step at most, and there is no MCP server.
Capability by area
Buying, lock-in and release record
Buying and licence (commercial risk)(lower is better)
- Price and licence volatility2.5
- No public prices, so changes cannot be seen; no licence change found
- Purchase constraints3
- Sold with qualified hardware or as a cloud subscription; metric not published
- Channel and access2.5
- Documentation and feature log public; sold through Cisco, Arrow, HPE, Supermicro and cloud marketplaces
- Owner stability3
- Private; last public round was a Series E of USD 125 million in 2020-07; CEO change 2024-07-09
- Cost of staying supported3
- Support windows and renewal terms not found
Technical lock-in(lower is better)
- Formats3
- Proprietary file system; each object is a file, so data stays readable over SMB, NFS and S3
- Export path1
- SMB, NFS and S3 reach the same data; Shift copies files to Amazon S3
- Stack coupling3
- Own file system stack on every node
- Hardware / cloud coupling2
- Qualified hardware from Cisco, Arrow, HPE and Supermicro, Run Anywhere x86, or AWS, Azure and Google Cloud
- Skills and tooling coupling2.5
- Standard NAS and S3 skills; qq CLI and vendor tooling for operations
Release credibility
- Cadence3.5
- The feature log shows quarterly releases (7.5.0.3 to 7.10.0.2) with maintenance releases between them; no dates published
- Roadmap transparency2.5
- Public administrator guide and feature log; no roadmap; AI direction only in press releases
- Say-do3
- The Veeam v13 certification was claimed as completed; the AI items of 2025-11 to 2026-07 have no GA dates to check
- Velocity3.5
- S3 work in most releases: conditional writes in 7.9.0.4, multipart and versioning fixes, an ObjectLockEnabled setting in 7.5.3
- Lifecycle stability3
- Stable product naming and a quarterly scheme; support windows not published; CEO change in 2024
Partners and services
- Partner programme openness3
- Hardware partners Cisco (recommended), Arrow, HPE and Supermicro, plus cloud marketplaces; partner terms not found
- Multi-tenancy and self-service2.5
- Up to 16,000 buckets, access keys and per-bucket policies; tenant isolation and quotas for S3 not read
- API and infrastructure-as-code3
- REST API and qq CLI cover administration; Terraform not verified
- Skills and certification2.5
- No public certification found
Alternatives to Qumulo
Questions about Qumulo
Is Qumulo any good?
Qumulo ranks #17 of 21 S3-compatible object storage products in the Object Storage Ledger 2026, with a Ledger Index of 54.4 out of 100. Its weakest are ecosystem and openness, lifecycle and tiering, s3 api fidelity.
What are the best alternatives to Qumulo?
The closest by Ledger Index are ARTESCA (54.3), Hitachi HCP (54.7), RustFS (56.4), ActiveScale (51.6).
How is Qumulo licensed and sold?
No public prices, so changes cannot be seen; no licence change found.
How much lock-in does Qumulo bring?
Qumulo scores 11.5 out of 25 on technical lock-in (lower is better). Export path: SMB, NFS and S3 reach the same data; Shift copies files to Amazon S3.
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