SLT connection increases Log data size

Hi

we have made SLT connection between ERP NW702(as SLT) and HANA SP4.

3 DD standard tables are in process initially at HANA data provisioning.

I see F:\drive size (storing Log data) are getting decreased everyday.

So i frequently stop the SLT connection and Data provisioniong jobs.

There is not dump or error in ERP side. 50GB size gets full in 1-2weeks time.

How to avoid this log data increase problem.

I believe taking bakeup can reduce log size, but i want to confirm whether increase of log size speed is  normal or abnormal?

I want to know how about others environment or how to reduce the speed of writing log files while using SLT?

Regards

Chandra