Journaled file system and enhanced journaled file system
Enhanced Journaled File System (JFS2) provides the capability to store much larger files than the Journaled File System (JFS). Additionally, it is the default file system for the 64-bit kernel. You can choose to implement either JFS, which is the recommended file system for 32-bit environments, or JFS2, which offers 64-bit functionality.
Note: Unlike the JFS file system, the JFS2 file system will not allow
the link() API to be used on files of type directory.
This limitation may cause some applications that operate correctly
on a JFS file system to fail on a JFS2 file system.
The SMIT paths shown in the following topic collections use the Journaled File System; similar paths exist for the Enhanced Journaled File System.
Reliable NFS server and enhanced journaled file system
You can use either JFS or JFS2 file systems with the Reliable NFS Server functionality of PowerHA® SystemMirror®.