JFS (Journaled File System)

JFS, or Journaled File System, is a type of computer system that helps organize and store data on a storage device like a hard drive or SSD. It uses a "journal"—a special log—to keep track of changes before they are fully written. This process helps prevent data corruption if there’s an unexpected shutdown or power loss. JFS improves reliability, speeds up recovery after crashes, and efficiently manages large files and systems. It's widely used in enterprise environments for its stability and ability to handle extensive data efficiently.