---
title: "IONOS CLOUD Object Storage (S3)"
slug: "ionos-cloud-object-storage-s3"
updated: 2026-09-03T15:59:31Z
published: 2026-09-03T15:59:31Z
canonical: "kb.ctera.com/ionos-cloud-object-storage-s3"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.ctera.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IONOS CLOUD Object Storage (S3)

![Image](https://cdn.document360.io/30792387-cdcb-4791-aa14-94929bbcd3fe/Images/Documentation/image-E9HG0GPQ.png?sv=2026-02-06&spr=https&st=2026-11-11T04%3A23%3A28Z&se=2026-11-11T05%3A23%3A28Z&sr=c&sp=r&sig=osVlh745T0pDNCbq2mpz011bnRjyf7swmRu6HvtCFKs%3D) **Bucket Name** – A unique name for the IONOS CLOUD Object Storage bucket that you want to add as a storage node. **Access Key ID** – The IONOS CLOUD Object Storage access key ID. **Secret Access Key** – The IONOS CLOUD Object Storage secret access key. **Endpoint** – The endpoint of the service. The port for the endpoint can be customized by adding the port after the URL, using a colon (:) separator. The default port is 80. **Region (Optional)** – The cloud data storage location. **Use HTTPS** – Use HTTPS to connect with the storage node.

- **Trust all certificates** – Do not validate the certificate of the object storage. Normally this is unchecked.

**Direct Mode** – Data is uploaded and downloaded directly to and from the storage node and not via the portal. If direct mode is defined for the storage node, CTERA recommends setting the deduplication method to fixed blocks and keeping the default 4MB fixed block size. For details, see [Default Settings for New Folder Groups](/v1/docs/virtual-portal-settings-2-1-1#default-settings-for-new-folder-groups).

**Note**

Once **Direct Mode** is set, the **Use HTTPS** option is also checked and cannot be unchecked.

**Use S3 Object Lock** – When checked, portal cloud folder compliance settings are automatically propagated to the S3 bucket, for all files in the cloud folder.

**Note**

Object lock must be enabled on the S3 bucket and the retention mode for the bucket must be disabled.

For details, see [Object Lock Support: WORM Propagation](/v1/docs/managing-storage-nodes-6-1-1#object-lock-support-worm-propagation).