Hello Ivan,
RZ20 does not push logs to a central system. It works in the way, that you connects systems to a central system and CEN can then access data on the monitored systems. You can store performance data centrally for monitored systems on CEN, but there is no such feature for logs in RZ20. Some customers have scripts on OS level to collect and store logs for a longer period of time.
Regards,
Alwina