FIO (Flexible I/O Tester)

FIO (Flexible I/O Tester) is a powerful tool used to evaluate and measure how well storage systems, like hard drives or SSDs, perform under different workloads. It allows users to simulate various data read/write scenarios—such as handling large files or multiple small files—to assess performance, stability, and reliability. By customizing the test parameters, FIO helps IT professionals optimize storage configurations and identify potential bottlenecks, ensuring the system meets specific speed and responsiveness requirements. In essence, it provides detailed insights into storage device behavior under diverse conditions.