I was hoping for a few more, especially ones that linux can read/write by default as well as OSX read/write by default.
FAT32 isn't ideal as its changing file/folder names from upper to lowercase each reboot on the linux server (I know its not a case sensitive file system).
Guess I'll change to ext2 and have to rebuild the server if it ever fails instead of plugging the drive into my mac.
Cheers for your help.