Case sensitivity of file systems for iSeries NetServer

All file systems, except for three, are case insensitive and do not cause case sensitivity conflicts with supported PC clients.

The following three i5/OS^® file systems, however, are case sensitive:

• QOpenSys

• User-Defined File System (UDFS), if specified case-sensitive when created

• Network File System (NFS), depending on which remote file system you access

The case of file names is significant in case-sensitive file systems. The names can consist of both uppercase and lowercase characters. For example, the QOpenSys file system can have three files in it with the following names:

NETSERVE.DAT NetServe.DAT netserve.DAT

These three files have technically different names (because QOpenSys is case-sensitive) and represent three distinct, separate objects on the system.

All the PC clients that iSeries™ NetServer™ supports are case insensitive. The case of file names is insignificant because all file names are translated automatically into uppercase. For example, from the three example files that are listed above, all the PC clients iSeries NetServer supports would recognize only the following file:

NETSERVE.DAT

Therefore, iSeries NetServer might not work correctly when using files in case sensitive file systems. This is particularly true when working with case sensitive file systems while you are using a graphical user interface such as the Windows^® 95 Explorer.

All other i5/OS file systems are case insensitive and do not cause case-sensitivity conflicts with supported PC clients.

Related concepts
File shares