Oracle Automatic Storage Management Cluster File System (Oracle ACFS) is a file system based on Oracle Automatic Storage Management (Oracle ASM). An Oracle ACFS file system is a layer on Oracle ASM and is configured with Oracle ASM storage. Oracle ASM, introduced in Oracle 10g, was originally intended to manage the data storage of Oracle database files only. The use of Oracle ACFS allows for user and application files to be stored in the Oracle ASM volume management system. Users and applications can access and manage Oracle ACFS using native operating system file system application programming interfaces (APIs) and command-line interface (CLI) tools. One of the benefits of such an approach is that the tools to manage physical data storage for database, application and user files are in the same system.