[throwaway2048]

AFS is a good example of a network filesystem that takes properties of the network into account, however its a little weird and not fully compliant with POSIX filesystem semantics.

However, it scales like crazy and is very powerful and reliable.

[IcePic]

I ran AFS for very long, it does have issues which perhaps other network fs'es don't even notice. It has issues with clients behind NAT for instance, the callbacks won't work. The limit of files in a dir is less than for local filesystems (or were) so Maildirs with long mail filenames could get into something that feels like "out of inodes but not space" situations. All in all, it was very nice though.