This issue just started within the past week. We are an Exchange 2010 environment running a DAG with 2 nodes in the cluster. My application logs all look fine and do not raise any flags regarding truncation of logs. However, I have a 646GB drive that was down to 544MB of space this morning. I am using Backup Exec 2015 and this has not been an issue until recently (within the past week). We've have a few incrementals fail with a GRT error, but I've disabled GRT on incrementals, now, so we'll see how that goes. Thanks in advance for any help.