server replication not completed due to system disk space

Hi Support,

Please help me. I have a one SEPM server installed on windows server 2003 enterprise edition. Thease server configured on 80 port. Now i am going to create a replication server. I had also run the replication but replication is not completed due to system disk space on primary SEPM server. I have also check the drive size on primary server and found primary server have 84GB of hard drive and all hard drive using by Symantec Endpoint Protection Manager and SQL database. Please the solution. We need urgent help.

At the replication time SEPM showing SEM5 overwrite opetion.

Please Help Me.