[rdiff-backup-users] ethernet nas compatible

[luca]

I've to buy a nas with this features:
- 500GB ethernet
- ext3 filesystem
-no raid
for use with rdiff-backup via smb/cifs protocol. Which model/vendor can you suggest me?
I've tried a fat32 ethernet/usb disk, but rdiff (Version 
1.1.12) failed with case sensitive name (ex. Mysqlhowto.pdf => ;032ysqlhowto.pdf).
Thank you, Luca.