A server shows a red fault LED but still runs - should it be shut down immediately?

Not necessarily. Identify the alert type first via IPMI or iLO. Redundancy alerts (fan or PSU redundancy) allow continued operation while repair is scheduled; critical alerts such as CPU overheating or RAID degradation call for moving the workload away and shutting down as soon as possible. ZhongLianDa provides 24x7 remote assistance to interpret alerts and advise on handling.