faster if this option is used when the bandwidth between the source and
destination machines is higher than the bandwidth to disk (especially when the
"disk" is actually a networked filesystem). This is the default when both
-the source and destination are specified as local paths.
+the source and destination are specified as local paths, but only if no
+batch-writing option is in effect.
dit(bf(-x, --one-file-system)) This tells rsync to avoid crossing a
filesystem boundary when recursing. This does not limit the user's ability