I decided to try the RSS option in FDISR. I have now done this twice with Shadowprotect version 3 and 3.1 and the results are the same: After installing RSS Shadowprotect the incrementals takes as long as a full bacup instead of seconds. It takes ~20 minutes (14GB) to do a incremental that is only and it doesnt get any better if I go back to VSS. Does FDISR somehow destroy the VSS when switching to RSS? I remeber Peter2150 had some issues with RSS vs SP in the early days but I just cant find the posts.