docs/en/_assets/commonMarkdown/sharedDataUseIntro.mdx
The usage of shared-data StarRocks clusters is also similar to that of a classic shared-nothing StarRocks cluster, except that the shared-data cluster uses storage volumes and cloud-native tables to store data in object storage.
You can use the built-in storage volumes that StarRocks automatically creates, or you can manually create and set the default storage volume. This section describes how to manually create and set the default storage volume.
NOTE
If your shared-data StarRocks cluster is upgraded from v3.0, you do not need to define a default storage volume because StarRocks created one with the object storage-related properties you specified in the FE configuration file fe.conf. You can still create new storage volumes with other object storage resources and set the default storage volume differently.
To give your shared-data StarRocks cluster permission to store data in your object storage, you must reference a storage volume when you create databases or cloud-native tables. A storage volume consists of the properties and credential information of the remote data storage. If you have deployed a new shared-data StarRocks cluster and disallow StarRocks to create a built-in storage volume (by specifying enable_load_volume_from_conf as false), you must define a default storage volume before you can create databases and tables in the cluster.