Is it okay to rsync the same source to the same dest multiple times?

[Skip Montanaro]

I'm doing a huge rsync from one net to another (about a terabyte) over
a dedicated DS-3.  One rsync doesn't even come close to saturating the
line, especially with compression enabled.  Is it okay to run multiple
rsyncs copying the same source to the same destination or do I have to
take care that they work on disjoint sections of the source directory
tree?

Thanks,

Skip Montanaro