A server has 10 discs. Among them, two disc form a red one group, seven disc form a rate five group, and the other one is configured as a hot spare desk. If any desk in the red group fails, the hot…

A server has 10 discs. Among them, two disc form a red one group, seven disc form a rate five group, and the other one is configured as a hot spare desk. If any desk in the red group fails, the hot spare desk automatically replaces the faulty desk, ensuring the system redundancy. This hot spare desk is a global hot spare desk.