 In parallel with this effort, some of the JFS development team returned to the AIX Operating System Development Group in 1997 and started to move this new JFS source base to the AIX operating system.In May 2001, a second journaled file system, "Enhanced Journaled File System (JFS2)", was made available for AIX 5L.Early in 2008 there was speculation that IBM is no longer interested in maintaining JFS and thus it should not be used in production environments.