A cluster uses a single license file. All nodes in a cluster have the same iHub System options enabled. Any node that you add to the cluster uses only the options that the cluster uses. For example, if you add an iHub that was in a stand‑alone configuration with page‑level security to the cluster, and the cluster does not have page-level security enabled, the new node does not support page‑level security.

To support multiple Encyclopedia volumes in a cluster, you need the Multi‑Tenant option or an equivalent. For example, you need the Multi-Tenant option to use both Encyclopedia volumes in a cluster that you create from multiple stand-alone iHubs, each with their own Encyclopedia volume.

When iHub is offline, you can replace the license file in the configuration home directory.