What Is ext3 (Third Extended Filesystem)?

ext3 (Third Extended Filesystem) is a Linux and Unix-like file system. The system uses journaling to track changes before writing on disk. This approach improves the main drawback of ext2 by reducing data corruption.

The ext3 file system is backward-compatible with ext2, which simplifies upgrades. It is suitable for systems that require robust data integrity. Newer systems offer performance improvements and scalability.