Which of the following is true for load balancing?

RAID configurations protect data and improve performance for individual disks within an array, but they are not directly responsible for load balancing I/O paths from a host to the array.

A dual-port HBA only provides multiple paths; load balancing also requires intelligence in the multipathing software and the storage array to distribute I/O across those paths.

A dual-port Host Bus Adapter (HBA) provides two physical paths from the host, but for true load balancing, the storage array must have an active-active architecture where both array controllers or ports can simultaneously service I/O requests for the same LUNs. This allows I/O to be distributed across both paths to maximize performance and throughput.

Simply sending I/O from a host through two ports to an array does not guarantee load balancing; multipathing software and an active-active array are necessary to intelligently distribute and process the I/O across those paths.