What is the main purpose of Network Interfaces in a data storage system?

The main purpose of Network Interfaces in a data storage system is to enable communication with external networks. This functionality is crucial because it allows data storage systems to connect with other devices, systems, or networks, facilitating the transfer of data to and from these external sources. A well-functioning network interface ensures that the data stored in the system can be accessed, shared, and managed effectively across different platforms, improving overall interoperability within a networked environment.

While the other options mention important aspects of data storage systems, they focus on different functionalities that are not the primary role of network interfaces. For instance, storing and retrieving data securely relates more directly to the storage architecture and security measures in place. Managing data redundancy pertains to protecting data and maintaining availability through mechanisms like RAID, which is independent of how data interfaces with networks. Increasing data access speed is often associated with performance tuning and optimization techniques, which might involve several components but does not define the core purpose of network interfaces.