afni.nimh.nih.gov

Hi Patti,

The disk is not bothered for decompression, as
it is done via a pipe. So yes, if compression has
a large impact on size, it would be faster for I/O
if the datasets were compressed.

This is more clear over a network mount. In a
similar vein, scp uses compression (not just
encryption) when copying files over a network,
because CPU speed is so much higher than
network speed. Disk I/O should be similar, but
with less of a difference.

- rick