I have a client which I did a SQL upgrade in August. I hired a SQL Engineer to do that. My client is experiencing issues with the 60 gig hard drive filling up and running out of space. There is a directory below the SQL file structure called Backup that is accumulating *.trn files. This is also the directory that houses the .bak files. SQL is set to backup everyday for a week and delete the older files. There are 165 trn files and about 43 Gigs of them.
My question is what are these trn files and why are they accumulating and can I delete them. Better yet can I get SQL to keep them from accumulating in the first place.