I have add 1 more hard drive in virtual machine and start my replication job but my virtual machine giving below error.
System has paused replication disk added to VM.
Looks like someone added an additional disk to your VM when replication was in progress.
Stop or abort replication. And start from the beginning.
This might help with some background:
The Replication Pauses When You Add a New Disk to the Source VM (vmware.com)