@GryKyo I don’t believe any Argon case provisions extra power to an external SSD, does it?
That’s often the issue when it comes to write errors and file corruption on an external disk on a Pi.
On top of this, with Bitcoin’s UTXO set expanded beyond 8GB, you’ll be thrashing that external disk extra hard every 10 minutes to the point of risking problems.
This is why we’re saying a Pi is no longer capable of running a Bitcoin stack and telling people not to do it. Maybe for just a little while longer it might be possible to run Bitcoin on 8GB so long as you have a processor several times faster than a Pi, and a SSD connected on a bus that’s faster (not USB)… but even that will see its day come with another round of ordinals or stamps or whatever will come next.
The Dell you mention might fit into that category, but it will still struggle. Adding Proxmox into the mix will eat into that small amount of RAM.
You call the Dell an “Intel” machine a couple of times… is this because you believe you’ll need something to emulate an ARM chip?
There’s an x86 version of Start9 you could install on the Dell directly, installing just the OS onto that 250GB SSD. But you’d be stuck with a data drive with ARM versions of the services.
However, if you had another spare drive, you could follow this transfer process and transfer the Pi disk data onto the new drive you’d insert into the Dell. This would rebuild all the containers for x86.