What caused the lack of disk space on M6 was not the actual database (which is only ~ 100+ MB), but the database
transaction log which was not cleared since a few years (and this was several GB large).
I was unable to clean the log as my access permisions prevent me from from doing so , so we had to have someone
at M6 backup the DB and push up for more disk space.
Forum is back online now and we should not have any log problems for another couple of years