So today I was going through my Synology NAS and noticed .DS_Store files all over the place.
These are actually files containing extended attributes created by Finder in Mac OS X. But, since they get written out to network locations, they can cause backup and versionining issues.
To disable them from being created on network locations, open a Terminal and run the following
defaults write com.apple.desktopservices DSDontWriteNetworkStores true
(Note: This only affects the currently-logged-in user)
Now in my case, I had these files all over my Synology NAS, so I was able to easily get rid of them by SSHing into the box and running the following:
find / -name .DS_Store -delete