A server administrator wants to minimize the amount of disk thrashing on a server. The BEST way to accomplish this would be to:

High-throughput disks improve read/write speeds but do not reduce the number of disk operations triggered by processing or paging bottlenecks.

Adding maximum memory reduces virtual memory paging but does not address the CPU processing bottleneck that is the primary driver of disk thrashing in this context.

A high-speed multicore processor can execute multiple threads concurrently, reducing processing bottlenecks that cause tasks to queue and generate excessive disk I/O. By completing CPU-bound operations faster, it reduces the memory pressure and paging activity that drives disk thrashing, making it the most effective hardware choice to address the root cause.

A cached disk controller with battery backup improves write performance and reliability but does not reduce the frequency of disk operations that constitute thrashing.