[X4U] How do I clone to a NAS?

[Neil]

I have a Buffalo Terrastation network attached RAID storage drive.  I  
also have a LaCie Big Disk FW800/USB2 RAID external drive.  I would  
like to clone the contents of my LaCie drive to my new NAS.  I can  
mount my NAS share in the Finder and copy files to it, but I can't  
select the share in Carbon Copy Cloner nor Super Duper.  I tried just  
copying the files, but I got an error message that the file name is  
too long so it stopped copying.  The NAS has a web interface that  
says that the file format is XFS.  I thought it should handle long  
file names.  So, does anybody have any suggestions?  Thanks.