| `NC_S3_BUCKET_NAME` | No | The name of the AWS S3 bucket used for the S3 storage plugin. | |
| `NC_S3_REGION` | No | The AWS S3 region where the S3 storage plugin bucket is located. | |
| `NC_S3_REGION` | No | The AWS S3 region where the S3 storage plugin bucket is located. Note that `NC_S3_ENDPOINT` takes precedence if set (the endpoint URL includes the region). | |
| `NC_S3_ENDPOINT` | No | S3 endpoint for S3 storage plugin. | Defaults to `s3.<region>.amazonaws.com` |
| `NC_S3_ACCESS_KEY` | No | The AWS access key ID for the S3 storage plugin. Required if no role access in use. | |
| `NC_S3_ACCESS_SECRET` | No | The AWS access secret associated with the S3 storage plugin. Required if no role access in use. | |