What is the purpose of the HANA index server?

The primary role of the HANA index server is to manage critical database functions including data storage, query processing, and transaction management. This is essential for the overall operation of the HANA database, as it allows the system to access and manipulate data effectively and efficiently.

Data storage involves how the database organizes and stores data on disk, which is crucial for maximizing performance. Query processing refers to the execution of SQL and other queries, enabling users to retrieve and modify data according to their needs. Transaction management ensures that multiple operations can occur without interfering with each other, maintaining data integrity and consistency, especially during concurrent data access.

The other options, while relevant to various database functions, do not accurately summarize the primary responsibilities of the HANA index server. For instance, storing backup configurations, executing background tasks, and handling network connections, though important operational aspects, are not the focal duties of the index server itself. This highlights the comprehensive role of the index server in HANA's architecture, ensuring optimal data management and user transaction support.