Do servers go down when the building is hit with a seismic wave without seismic isolation? I imagine the force on the components would be small so as long as all the pieces are physically secured they would just shake around a bit along with the building.
The force could unseat components, damage mechanical hard drives, knock over a server rack, not to mention environmental damage like shifting the foundation or turning off the power.
Yes, absolutely. The hard drives would even get upset if you merely shout at them: