Hello experts. I'm have recently built a server to be used as file-/media server for myself and a few family members. It will be running on Ubuntu Server with ZFS. I will be using Docker to run quite a few services for serving and streaming. Although I have already built the server I am not quite certain yet on the best utilization of my SSD drives. My intended setup is shown in the drawing below. I have two main questions:
1) Which type of SSD should I use for Root and which for the fast storage (Samsung 970 Pro NVMe / Intel D3-S4610)?
2) Since I will not have any data stored on my root drive (meaning redundancy is not critical, I can live with some downtime) should I use one of the drives a SLOG or L2ARC device for the HDD pool?
3) Any other comments on the setup?

1) Which type of SSD should I use for Root and which for the fast storage (Samsung 970 Pro NVMe / Intel D3-S4610)?
2) Since I will not have any data stored on my root drive (meaning redundancy is not critical, I can live with some downtime) should I use one of the drives a SLOG or L2ARC device for the HDD pool?
3) Any other comments on the setup?
