Hiyas, a friend I help out with some basic IT stuff has 2x pst files which in total exceed 80gb. I am wondering how this can be handled so he can keep his files but it doesnt impact performance etc? Basically he runs a engineering/construction company and the files that are shared around for projects tend to have lots of attachments which add up over a longer period. He needs them as clients often ask for historical stuff. Lately he has been dragging the emails out and putting them into folders but they lose email dates unless he spends time renaming them as well.. I think from my basic reading the best way is to split his pst files down (say by year) ?? Any other suggestions?