What is the primary function of a server cluster?

The primary function of a server cluster is to provide high availability and load balancing. This setup involves multiple servers working together to handle requests and maintain service continuity. If one server in the cluster fails, another can take over its tasks without disrupting the service, thereby ensuring high availability for users and applications.

Additionally, load balancing is crucial as it distributes workloads across the multiple servers in the cluster, which helps optimize resource use, reduce response time, and prevent any single server from becoming overwhelmed. By doing so, server clusters enhance performance and reliability, making them particularly valuable in environments that demand constant uptime and efficient resource allocation.

This contrasts with the other options; while enabling remote access and storing data are important functions of servers, they do not capture the essence of what a cluster is designed to achieve in terms of availability and resource management. Similarly, maintaining a single-point connection goes against the distributed nature of clustering, which aims to eliminate any single point of failure.