What does the concept of high availability aim to achieve in network performance?

High availability primarily focuses on ensuring that services are consistently available and accessible, minimizing downtime even during failures or maintenance activities. This involves implementing redundant systems, load balancing, and failover strategies so that users can continue to access services without interruption.

While guaranteeing 100% uptime seems ideal, in practice, achieving absolute uptime is nearly impossible due to various uncontrollable factors such as hardware failures or network outages. Thus, the aim is not just to strive for an unrealistic goal, but rather to design systems that can maintain service accessibility as consistently as possible.

Increasing user bandwidth and limiting external network connections pertain more to performance optimization and security considerations, rather than the high availability concept itself. These aspects might improve the user experience but do not directly relate to the core goal of ensuring ongoing service accessibility regardless of the circumstances.