Exchange 2013 - I do a nightly backup of my exchange server with a Barracuda Backup device and have been noticing the space growing. Looking at the server I found folders for each of my databases that contain .log files dating back to April. File names resemble E02001BE9A0.log, E02001BE9A1.log, E02001BE9A2.log, etc. the E02.chk file in each folder has today's date on it. All together these old log files take up about 1 TB of data. Can someone tell me what these are? I've tried opening, but it's garbled. Can they be deleted? If so, how? I really need help sorting this out.