Case sensitivity

Native GPFS is case-sensitive; however, Windows applications can choose to use case-sensitive or case-insensitive names.

This means that case-sensitive applications, such as those using Windows support for POSIX interfaces, behave as expected. Native Win32 applications (such as Windows Explorer) have only case-aware semantics.

The case specified when a file is created is preserved, but in general, file names are case insensitive. For example, Windows Explorer allows you to create a file named Hello.c, but an attempt to create hello.c in the same folder will fail because the file already exists. If a Windows node accesses a folder that contains two files that are created on a UNIX node with names that differ only in case, Windows inability to distinguish between the two files might lead to unpredictable results.