SQL transaction log backups

Hi Folks,

I have backup exec 2012 R2 performing full backups of my SQL servers nightly. I want to add transaction log backups to the jobs. My question is:

- One of my larger SQL servers takes approximately 14 hours to perform the full backup. I want the transacation log (incremental) backup to run every 4 hours throughout the day. What will happen when the full is running and the next transaction log backup is scheduled to fire? I don't see a way for me to tell the incremental to only run between certain hours (which would be ideal)

i appreciate your assistance.