ArcInfo GRID performance vs TIFF files

[Norman Vine]

Nuno Gil writes:
>
> I would like to ask if using GRID files or TIFF files as an input in
> MapServer is the same in what concerns performance?
> I have typically tiles of 5ºx5º degrees with 1 arcsec resolution
> (approx 900 MB)... If I request a smaller part of that tile I suppose
> MapServer does not need to read the entire tile, am I correct?

You should find this interesting reading

http://mapserver.gis.umn.edu/doc44/raster-howto.html

HTH

Norman