@Rajath Cโ :
Unity Catalog in Databricks is stored in the workspace's metadata, which is a database that holds information about objects like notebooks, clusters, jobs, tables, and libraries. This metadata is stored in a distributed database hosted in the Databricks control plane.
When you say that you're able to access the Unity Catalog even though the clusters are down, it's likely because the metadata is still available in the control plane, and you're able to view it through the Databricks UI or API. However, without a running cluster, you won't be able to execute any code or run any jobs that depend on the data stored in the catalog.