1. Which  ports need to be open on firewall to install Raysync?

You can view [Firewall Configuration]

 

2. What are the minimum hardware and software requirements to run Raysync server?

Hardware requirements of the server: 8GB of CPU 4 core memory; 
Software requirements: CentOS 6.x/7.x/8.x.

 

3. What are the minimum hardware and software requirements to run Raysync client?

Hardware requirements: 

4GB of  CPU Dual-core memory

Raysync GUI client supports Windows(win7 and above) /MacOS(10.11 and above) /Linux(CentOS 7). x / Ubuntu 18.04)

Raysyncmd client supports Windows(win7 and above) /MacOS(10.11 and above) /Linux (kernel 2.6.32 and above).