If I understand correctly your asking about hardware sold as for “servers”. “Server” hardware features focus on scalability and redundancy. If you’re running a service that’s generating income and the powers that be therefore say it “can’t” go down then you’re starting to pay for redundant systems. Multiple hotswapable power supplies for example.
Most folks self hosting don’t really need to worry about this level of availability as they’re hosting services as a hobby or for friends at most; not paying customers with a boss demanding high availability.
If I understand correctly your asking about hardware sold as for “servers”. “Server” hardware features focus on scalability and redundancy. If you’re running a service that’s generating income and the powers that be therefore say it “can’t” go down then you’re starting to pay for redundant systems. Multiple hotswapable power supplies for example.
Most folks self hosting don’t really need to worry about this level of availability as they’re hosting services as a hobby or for friends at most; not paying customers with a boss demanding high availability.