Final answer:
In a clustered Indexer environment, the version of the Search Heads should either match or exceed that of the Peer nodes to ensure proper functionality and compatibility.
Step-by-step explanation:
In a clustered Indexer environment with Peer nodes and Search Heads, it's important to maintain compatibility in terms of versioning. The general requirement is that the Search Heads should be at the same version as the Indexers, or at a version higher, for seamless integration and optimal functioning. It is not recommended to have Indexer Peers running newer versions than the Search Heads, as this can lead to incompatibility issues with search capabilities and data retrieval. Keeping all components at the same version can help in avoiding these issues, ensuring proper cluster functionality and data integrity.