Connect Backblaze B2
Backblaze B2 Cloud Storage offers an S3-compatible API alongside its native one — this guide uses the S3-compatible API, which is what MyArboris needs.
1. Create a Backblaze account
Sign up at Backblaze (or use an existing account) and open the B2 Cloud Storage section.
2. Create a bucket
Create a new bucket — for example “<your-bucket-name>”. “Private” visibility is fine and recommended; MyArboris doesn't need the bucket to be public.
3. Create a scoped application key
Under “Application Keys,” create a new key restricted to “This bucket only” (the bucket from step 2), with Read and Write capability — not your account's master application key.
4. Endpoint and region
Your bucket's details page shows an S3-compatible Endpoint, in the form https://s3.<region-code>.backblazeb2.com (for example eu-central-003). Use that exact endpoint and region code.
5. Access key ID and secret access key
The application key you created in step 3 gives you a keyID (use this as the access key ID) and an applicationKey (use this as the secret access key) — copy both immediately, the secret is shown only once.
6. Path-style access
Leave “Use path-style access” unchecked. Backblaze B2's S3-compatible endpoint supports the default virtual-hosted addressing MyArboris uses.
7. Path prefix (optional)
If you're sharing this bucket with other tools, set a path prefix (for example “myarboris/”) so MyArboris's files stay in their own folder.
8. What to paste into MyArboris
Endpoint URL: the S3-compatible endpoint from step 4. Region: the region code from step 4 (for example eu-central-003). Bucket name: the bucket from step 2. Access key ID: the keyID from step 5. Secret access key: the applicationKey from step 5. Path prefix: optional, from step 7.
9. Test the connection
Click “Add storage” — MyArboris tests the connection automatically (a small write, read, and delete) and shows the result right away. You can re-run “Test connection” on the saved entry any time afterward.