OpenNeuro

openneuro.org · Storage · 1 record · JSON

OpenNeuro Storage

★ qualifiesinstitution?card?R

openneuro.org · academic · storage/openneuro · JSON · compare

Free tier	Free, no published per-dataset or per-account cap. 'Is this service free to use? Yes!' A 6.4 TB dataset has been deposited (staged incrementally). unit TB; metered on unstated
Price	none stated
Per-object cap	not stated
Retention	per-object-cap: none published; the real cap is a transient staging worker ('files are stored on a worker with relatively limited storage space'), so very large datasets must be uploaded in batches with ~24 h waits between snapshots. Retention: permanent, every version gets its own DOI; 36-month grace before forced CC0 release (1080 days)
Egress	Free and anonymous. Objects live on Amazon S3 (`s3.amazonaws.com/openneuro.org`), public-read, ranged, CORS-open. No auth, no egress meter.
Identity	institution (placeholder) inferred from the category 'academic'; the source record states no identity cost, so this is a class assumption, not evidence
Binding	none no constraint in the record binds at this scale; the record carries no limit of a kind the vocabulary names
Interface	s3, git, rclone, cli s3
Tooling	openneuro-cli (`openneuro upload`) + git-annex, and DataLad. Read side is plain anonymous S3 GET — any S3 client, rclone's s3 remote with no credentials, or plain curl.
Composes with	Unlimited datasets, each a fresh S3 prefix under `openneuro.org/ds<ID>/`. Because the read side is unauthenticated S3, fetch volume never touches OpenNeuro's app tier.
Reliability	Large uploads fail in the staging area and require batch-then-wait choreography; BIDS format is mandatory and undeface-d datasets get deleted after the fact.
Notes	Free, no published per-dataset or per-account cap. 'Is this service free to use? Yes!' A 6.4 TB dataset has been deposited (staged incrementally).
Evidence rung	reported One page read moves it to documented.
Checked	2026-10-21 (inherited); stale on 2026-11-04

Evidence (4)

date	source	what it proved
2026-10-21	docs.openneuro.org/faq.html	'Is this service free to use? Yes!', CC0 after 36-month grace, CLI upload supported
2026-10-21	github.com/OpenNeuroOrg/openneuro/issues/3683	'The full size is 6.4T', staging worker explanation, a batch-upload alternative route
2026-10-21	s3.amazonaws.com/openneuro.org/ds000001/dataset_description.	probe: GET -> 200, 615 bytes, real BIDS JSON
2026-10-21	withheld	probe: 16 parallel ranged GETs of sub-01_T1w.nii.gz -> 3,200,000 bytes in 2.65s (1.21 MB/s) vs 1 connection 200,000 bytes in 3.26s (61 KB/s) — 20x linear scaling

Unknown or withheld values (6)

$.evidence[3].url private-url
$.free_tier.notes process
$.identity_cost.kind identity-defaulted
$.per_object_cap.notes not-extracted
$.per_object_cap.stated not-extracted
$.retention.notes not-extracted

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