Unfortunately no, you will not be able to host your server on a Raspberry Pi 4 due to architectural differences of the dedicated hosting toolkit. The CPU of the Raspberry Pi 4 uses (ARMv8) architecture, whilst Rust is compiled for (x86) architecture. This difference means that you will not be able to run the required software to host the server.

However, I will go over some more generalised requirements for hosting a Rust server, so you understand the neccessary requirements for hosting if you choose to use alternative hardware for hosting.

The minimum hardware requirements for running a Rust dedicated server is at least 4GB of RAM. It is strongly advised that you use 8GB or higher.

It's worth nothing that depending on the current load on your server, such as activites that are occuring in the server and their required processing power or number of players, 8GB of RAM may not be suitable for your requirements. Some servers may even require 16GB of RAM or higher. You should plan ahead for how many players and what mods you expect to use and your allocations of memory.

It's more difficult to accurately measure the processor requirements for Rust, but as a general rule of thumb, it's recommended to have a relatively powerful processor, even for a smaller server. It's recommended that you have at least 3GHz+ or higher running on 64-bit architecture. You would also want to have at least 2 physical cores dedicated to it's operation.

For storage, it's strongly recommended to use a fast type of storage, such as an NVMe drive or M.2 drive. Regular SATA SSD's would work as well and are a cheaper alternative to NVMe and M.2 drives. A HDD is not recommended as it may be too slow for the server to keep up with the required read and writes.

For your networking, if you have a smaller private server, you do not need a very high upload and download speed, however, latency would be paramount for both situations to ensure that your players have a good experience. If you are planning on hosting this server publicly, it's a good idea to consider hosting it via a datacentre host, as they have significantly more bandwidth capabilites and may include DDoS protection to ensure your server is not vulnerable to attackers.

If you could provide more insight to alternative hardware that you are planning to use, I would be able to provide a clearer insight on how your server would perform with that hardware.

Please let me know if you have any further questions.
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