Getting started

Ombra Cloud speaks the Amazon S3 API. Create an access key in the console, set the endpoint of your region and use any S3 client.

Endpoints

Region	Location
eu-central-1	Falkenstein, DE
eu-north-1	Stockholm, SE
eu-north-2	Helsinki, FI
eu-west-1	Amsterdam, NL

Each account gets a dedicated endpoint per region. You will find it in the console under Access keys → Endpoint.

Authentication

Requests are signed with AWS Signature Version 4. Access keys are scoped to buckets and can be read-only.

export AWS_ACCESS_KEY_ID=OMBR…
export AWS_SECRET_ACCESS_KEY=…
export AWS_ENDPOINT_URL=https://<your-endpoint>

Uploading large files

Use multipart uploads for objects above 100 MB. Parts can be 5 MB to 5 GB, up to 10,000 parts per object.

rclone copy ./videos ombra:media/2026 --s3-chunk-size 64M --transfers 8

Limits

Item	Limit
Buckets per account	1,000
Object size	5 TB
Request rate	3,500 PUT / 5,500 GET per second per prefix

Tested tools

aws-cli v2, rclone ≥ 1.60, restic, kopia, Veeam Backup & Replication 12, Cyberduck, MinIO client.