Sorry, RPM is rotations per minute. How fast the drive platers are spinning inside the drive. Also 7200 is fine for what you are doing.

Rpm is a thing to look at. A 7,200 drive is faster than a 4,200, but slower than a 10,000.

Thats not really how it works. Lemmy works on a Push model. When a post is created and the instance knows you are interested in the post by a user subscribing to it, the Lemmy instance will send the post to your server. But if your sever does not respond then the other instance will mark your server as dead and stop trying to send you posts.

When you turn on your instance you aren’t going to get a flood of posts that you have missed over the past few days/hours.

Yea, you can but unless you plan to leave your PC on all the time and open ports on your firewall directly to your PC.

There are some major risks on doing that though.

It’s still the wrong tool for the job though.

As others have said get a regular desktop os and enable qemu.

At the moment I am only doing jellyfin but I am looking to expand into pihole, audiobook shelf and some arr stack.

Does it need to be 4 bay?

Aoostoar it is only a 2 bay though.

They have a AMD variant if you want to go down the Proxmox route with LXC or docker in a VM.

Yes, in an ideal world, you would learn all the tools the software offers so when a third party tool come along you know what problem it is trying to solve.

This sounds stupid but what about tdarr?

Stash the file in a staging directory that tdarr watches, have tdarr convert the file to something small like h265. Output the converted file to a folder rsync watches.

to start with

PiHole DNS server
Jellyfin Home media server
forgejo Git server to hold your docker compose files.

Honestly that sounds overkill for someones. First time into self hosting.
I would start with something like a Nuc or a secondhand 1 liter PC (dell optiplex/HP elite mini/Lenovo ThinkCenter) which are dirt cheap on eBay.

Do you have an indication of what you want to run that requires that mid range gaming setup?

I have known several ISP in Australia who use them as core routers so depends how you spec them.

If you want gigabit throughput don’t get a hEX look at the CCR range. If you need less than 100Mb go for a hEX.

I find DrayTek devices to work quite well.

I would go with raid on the backup system too. you don’t want all your backups disappearing because one drive fails.

cloudflare tunnel?

Stick the cloudflare container in a docker network with other services you wish to expose for access.

For home have a crack at KVM with front ends like proxmox or canonical lxd manager.

In an enterprise environment take a look at Hyper-V or if you think you need hyper converged look at Nutanix.

Pinhole is still a thing. If you want other options there is also adguard.

Working for a sip provider.

We used syncthing to sync sound files between sip servers. Things like voicemail, call recordings, hold music, menu options.

Cisco is an Enterprise/ISP/Government provider so no third party stuff will run. They have NIST and FIPS standards they must follow in order to be able to sell into those spaces.

You may be able to get some of their old Linksys by Cisco stuff to run tomato but I think they sold that product line off to Belkin who killed it.

Anyone know if I can install some custom OS/firmware via the USB on the back?

No, Cisco uses their own silicon in that unit which means things like Tomato or Wrtt(?) Won’t load onto it.

Best you can do is take it to an ewaste or sell it to a second hand Cisco reseller for maybe €75 if you are lucky.

If you have used Draw.io (free) or lucidcharts (paid) you can host your own version as they are both versions of jgraph

https://github.com/jgraph/docker-drawio

Change the DNS servers on you devices to a DoT or DoH provider.

The ISP can’t intercept and rewrite your requests if they are in a secure session.

Dot or doh will stop the DNS rewrites.

Are you looking for a Visio type program? Draw.io is a free alternative.

If you want something crawls your managed switch for LLDP or CDP info then maybe a monitoring system like LibreNMS has a map feature.