@Ajit-Parundekar That is something you will need to work out for yourself, the configuration of the firewall alone can vary the impact on resource utilisation. I would suggest you purchase an Omega2+ with power dock on build a POC device. Once you have perfected your build then moe to the Omega2S+. The Omega2+ has an SD Card slot so you can experiment with expanding resources, later you can build your own custom PCB using the Omega2S+ and add an SDCard slot or eMMC if required. I use a 64GB SDCard with my custom PCBs since my app needs to meet some Aussie data retention regulations.