|Think about Loose Coupling
I don't know what a Celerra is, but I'm not entirely sure CIFS will report disk size and free space correctly past 2GB. In fact, I'm stone cold certain that the Win9x implementation of CIFS doesn't, and that's the reference implementation that all the other implementations to a large extent have copied or attempted to copy (though these days the Samba folks may be more intent on copying WinXP). My first stab at a guess would be that the Perl module is not your problem, but the underlying filesharing technology. If you need a more definitive answer, you may need to find someone who knows what a Celerra is.