Depends on your needs. I have a couple LXDs that only need 512MB each… But I did upgrade mine to 16GB.

Yeah, one of the USFF or whatever they call them.

I got an HP ProDesk 400 G2 with an i5 6500T, 8GB of RAM and a 512GB SSD for 99€. Works beautifully, and while it’s not as efficient as a raspberry pi, it idles around 6-7w and can run a bunch of VMs with Proxmox.

RAID is not backup :) And yes, it happened to me for 4 drives in a 16 drive system to fail in the span of just a few days (same batch).

Not only for Nextcloud, but I recommend setting up crowdsec for any publicly facing service. You’d be surprised by the amount of bots and script kiddies out there trying their luck…

I would recommend just setting up iptables & crowdsec. Open only the ports your services need, and add the relevant plugins to crowdsec. Nothing should come through.

If you have services that allow people to upload files, that’s a different story.