SunFs

SunFs, also known as the Sun Microsystems File System, was a proprietary file system developed by Sun Microsystems. It was the default file system for early versions of the SunOS operating system, which was the precursor to Solaris. SunFs was designed for performance and reliability, featuring a hierarchical structure for organizing files and directories. It supported features such as file permissions, symbolic links, and hard links, which are standard in many Unix-like file systems.

The file system was characterized by its contiguous allocation strategy, which aimed to minimize disk fragmentation. It also included journaling capabilities to enhance data integrity and enable faster recovery in case of system crashes. SunFs was a significant component of Sun Microsystems' hardware and software offerings, contributing to the robustness and efficiency of their systems during the late 1980s and early 1990s. As operating system technology evolved, Sun Microsystems transitioned to newer file systems like UFS (Unix File System) and later ZFS (Zettabyte File System), which offered more advanced features and scalability. While SunFs is no longer in widespread use, it represents an important step in the development of file system technology.