System requirements for ELK SIEM

Hi!

I need depoly ELK SIEM for analyze Windows, Linux, routers logs. Network consist of 300 Windows PC , 15 Linux servers and 3 routers.
What do CPU, RAM, HDD need for stable working ELK SIEM on Docker?
Where I can find system requirements for ELk SIEM Docker stack?

Just search in this forum you will find many answered questions like this
Read this blog Benchmarking and sizing your Elasticsearch cluster for logs and metrics | Elastic Blog