FIO

FIO (Flexible I/O Tester) is a command-line tool used to simulate various types of data read and write operations on storage devices like hard drives, SSDs, or network storage. It helps assess performance and stability by generating customizable workloads, such as random or sequential data transfers, different sizes, and specific patterns. By doing so, FIO enables IT professionals and developers to benchmark storage systems, identify bottlenecks, and evaluate how different configurations impact speed and reliability, ensuring optimal performance for applications and infrastructures.