What are the best dashboard options for monitoring Server performance?

You could also explore a combination of Grafana with Prometheus. This setup can show you dashboards for CPU, RAM, disk, and network usage, plus it handles alerts if anything exceeds your set thresholds or if there's a RAID disk failure. It's a common setup for internal monitoring and with some configuration, you can gather a lot of useful data.

You might want to check out Glances, which is an open-source monitoring tool. It can provide a good overview of your server's performance and doesn't take ages to set up. Plus, it's available on GitHub!

Checkmk is another great tool. It requires deploying a Linux VM and installing a few tools, but once set up, you'll be able to monitor everything you need along with customizable alerts through various channels like Slack or email.

Zabbix is another solid option. It can definitely track all the metrics you're after, but it does require a bit of initial setup. If you take the time to configure it right, it works really well. I started using it a few months ago, and after a few tutorials, I got the hang of it! We switched from LibreNMS to Zabbix for more customization.

There are plenty of monitoring systems that can do what you're looking for. To monitor your RAID and disk health, I suggest getting those DRAC cards set up since they can handle all that monitoring for you right out of the box.