Space savings at the moment. I tend to accumulate a lot of files which do not change over time (ebooks, other documents etc) and sometimes I have multiple redun

Space savings at the moment. I tend to accumulate a lot of files which do not change over time (ebooks, other documents etc) and sometimes I have multiple redundant copies (often with different names). A CAS file system could replace any duplicates added to the file system with a hard link to a preexisting copy and help me save space.