Looking at the business solution there are 9 TB, but files only up to a max of 250 gb in an upload - Is it possible to upload files up to 1,5 TB somehow?
Welcome aboard the forum, @KlausLion!
Correct me, if I’m wrong, but it sounds like you’re using the Dropbox website, right?
If yes, then I’m afraid it’s not possible to change that. Also, keep in mind that the 250GB limit you mention is for downloads via the Dropbox website; when uploading files, the limit is 50GB instead.
However, you can use the desktop app as a workaround, since these limits are different there (you can upload up to 2TB at a time).
Hope this helps a bit.