Servers get replaced that often because they are using too much energy for too little computing power compared to newer generations. If the module is already up there and functioning and energy is free then it’s a whole different thing.
Defects are another topic.
And the whole thing is obviously crazy for a whole lot of other reasons.
Not trying to be an asshole, just giving info: the radiation shielding on earth is achieved (mostly?) by the magnetic field that diverts the big particle cannon ammunition.
No, that works well with Starlink for example. But only because it’s in low earth orbit. In geostationary orbit You do in fact have a horrible ping.
Not being familiar with the details of this Elon brain fart I would hope they didn’t aim for geostationary… Because why?? Then again who knows with that idiot.
Hmm. Assuming you have some small hydrazine or whatever booster you could maintain a low orbit for a while. But yes not endlessly. That bring said there is a middle ground between 400km and 34000km that might provide for a good orbit and acceptable ping. That all depends on the application of course.