We have a group of servers attached to an HP SAN, and can easily share one SAN volume betweent two server 2003 servers by presenting the LUN to each server through Selective Storage Presentation, however, the OS on each server doesn't seem to like this "share" operation a whole lot. It seems if data is written from one system to the volume the other system cannot see it unless the first system first "lets go" of the volume. We'd like to do this so that we can move large files between servers across the fast SAN fiber back bone instead of ethernet. Anyone have any recommendations on a quick and dirty way to make the volume accessible and writeable between the two servers? Only flat files would be stored there...there would not be any disk I/O going on other than writing once from one server and then reading from the other server once the data is copied.