I'm attempting to move an informixserver from a small SAN to another
with
more space using the ontape "simultaneous backup and restore using
standard I/O" method described in the Informix BandR Manual. I'm also
using a file which describes chunk renaming with ontape.

I already have TAPEBLK set to max of 16384 for both source and target
informixservers; and sqlhosts file option b=16384 for both. The
memory
footprint of the target is by necessity somewhat smaller than the
source.
Are there any other specific onconfig parameters that can be modified
to
speed up the transfer -- or any other actions that can be taken to
improve
decrease the duration of the data move?

Using HP-UX 11.23 and IDS 11.50.FC4.