Copying from one networked filesystem to another

[Dan Stromberg]

What sorts of options might I give to rsync, to optimize transferring
data from one networked filesystem to another?

Transferring directly between the fileservers is not an option in this
case, for technical reasons.

What sorts of options (or system modifications) might I use to help
rsync get through a HUGE list of files?

We need to be able to add as well as remove files.

We've been using:

/usr/local/bin/rsync \
                        -a \
                        --whole-file \
                        --stats \
                        --progress \
                        --block-size $(expr 1024 \* 1024) . "$dst"

Thanks!