TrueNAS CORETrueNAS CORE Nightly Development Documentation
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S3 Screen

Due to security vulnerabilities and maintainability issues, the S3 service is deprecated in TrueNAS CORE 13.0 and removed in CORE 13.3. Beginning in CORE 13.0-U6, the CORE web interface generates an alert when the deprecated service is either actively running or is enabled to start on boot.

TrueNAS Enterprise
Beginning in CORE 13.0-U6, Enterprise customers with the S3 service running or enabled are prevented from upgrading to the next major version.

Users should plan to migrate to a separately maintained MinIO plugin or otherwise move any production data away from the S3 service storage location. Migrating from the built-in S3 service to the plugin could result in an extended data migration window and potential disruption to S3 data access.

See the CORE 13.0 MinIO Plugin tutorial for detailed migration instructions.

S3 manages data using object storage architecture.

Having large numbers of files (>100K for instance) in a single bucket with no sub-directories is not recommended. It can harm performance and cause stability issues.

Use the S3 screen to configure S3 on your TrueNAS.


The SAVE button activates after entering the required settings.

CANCEL closes the S3 screen without saving changes and displays the Services screen.

S3 Configuration Options

IP AddressSelect an IP address from the dropdown list options, ::, or enter the IP address that runs the S3 service. Select to tell the server to listen on all addresses. Select the TrueNAS IP address to constrain it to a specific network.
PortEnter a static port for the MinIO web console. Default is 9001.
Console PortEnter the TCP port that provides the S3 service.
Access KeyEnter the S3 access ID. See Access keys for more information.
Secret KeyEnter the S3 secret access key. See Access keys for more information.
DiskBrowse to a directory to define the S3 file system path.
Enable BrowserEnables the S3 service web UI. Access the MinIO web UI by entering the IP address and port number separated by a colon in the browser address bar. Example:
CertificateSelect an SSL (CORE) certificate or (SCALE) certificate created or imported in (CORE) System > Certificates > Add or (SCALE) Credentials > Certificates for secure S3 connections.
TLS Server Hostname / TLS Server URIDisplays if using an SSL certificate. Enter the MinIO server proxy-able address.
MinIO deprecated Access key and Secret key. MINIO_ROOT USER arguments and their values replace Access key. MINIO_ROOT_PASSWORD arguments and their values replace Secret key. For the ROOT_USER value, use a name up to 20 characters. For the ROOT_PASSWORD, use a string of 8 to 40 randomized characters. MinIO recommends using a long password string of unique random characters.