There is an options   cifs.save_case , maybe this thread will help.

https://communities.netapp.com/thread/16538

From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Aaron Lewis
Sent: Wednesday, August 20, 2014 2:08 PM
To: toasters@teaparty.net
Subject: CIFS Questions

Hi all,

I have a couple questions around CIFS on my 7-mode NetApp (running 8.1.3):

1. Is there a way to disable NetApp from creating 8.3 filenames on a CIFS/FTP share? Or, if there isn't, is there a way to hide the 8.3 filenames?

2.  Is there any way to make FTP folder paths on a NetApp CIFS share not be case sensitive?

Many thanks in advance!

Cheers,

Aaron