Boost clock speed is nearly a ghz higher on the 11900, that's nothing to sneeze at and will beat the brakes off of an 11700, but probably not worth the cost if you don't need the extra horsepower
Love a cheap build (my daily driver desktop is still an i7-2600), but that's a lot of ask for that CPU, and note you won't be able to pass any hardware to your VM without VT-d support
In general, any reallocated sectors indicates problems with the disk. Your level of risk tolerance is the only deciding factor, personally for me - 1 is enough to RMA.
Dunno about Snapraid, but Wendell got ZFS going on Unraid, if you're hell bent on serving the bit rot bogeyman
https://forum.level1techs.com/t/zfs-on-unraid-lets-do-it-bonus-shadowcopy-setup-guide-project/148764
Could be, but the OP mentioned assigning it to a Plex container, I was curious as to why - I have a few of those 1030s laying around so if there's a good reason to use them, I'm all ears
Here's the nVidia GPU matrix, it shows the capabilities and limitations for their cards
https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new
This is a Bad Idea™️
UnRaid should not be exposed to the internet, only individual services/dockers/VMs should. Direct outside access should only be made available through a VPN.
If you're checking to see if it's open on the WAN side, doesn't matter what machine runs the check it'll still hit the WAN IP. If you see a response, it's open to the WAN.