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

# Multiple Storage Clusters for Loading Data

export const OcientDataIntelligencePlatform = "OcientAIQ™ Unified Data Platform";

export const Ocient = "Ocient®";

You can load data in the {OcientDataIntelligencePlatform} that contains multiple storage clusters. Take these considerations into account for loading in a multi-cluster environment and the related troubleshooting.

## Multi-Cluster Environment Considerations

* Loader Nodes send data to all Foundations Nodes in the {Ocient} System.
* The distribution of data loaded to each cluster is proportional to its total capacity.
* Every Loader Node loads to every cluster that belongs to the storage space of the target tables. Depending on the location of the tables, the database or schema could contain multiple storage spaces.
* A storage cluster can only belong to one storage space.

<Info>
  Dropping a cluster is not supported in an Ocient System that contains multiple storage clusters. However, you can drop a cluster in a system that contains only one cluster.
</Info>

## Troubleshooting Considerations

* If a cluster shuts down, the load stops and provides results after the cluster is available again.
* The load is tolerant of Loader Node failures as the load can make progress when at least one Loader Node is still available.
* Before adding or removing a node, storage drive, or cluster, you must stop the load. Stop the LAT and any `CREATE TABLE AS SELECT` or `INSERT INTO SELECT` SQL statements. Otherwise, the load fails.

<Info>
  Contact Ocient Support for help with a complex multiple storage cluster setup.
</Info>

## Related Links

[Core Elements of an Ocient System](/core-elements-of-an-ocient-system)

[Cluster and Node Management](/cluster-and-node-management)