Conversation so far:
What is Home Plate?
During 2007 Spirit spent several months near the base of the Home Plate plateau.
When did the global dust storm occur?
Towards the end of June 2007, a series of dust storms began clouding the Martian atmosphere with dust.
How did the dust storms affect the rover?
The storms intensified and by July 20, both Spirit and Opportunity were facing the real possibility of system failure due to lack of energy.

Question: Did either end up experiencing a system failure?
Self-contained rewrite: Did either of Spirit and Opportunity end up experiencing a system failure?