dmidecode -t processor mcelog --client # on Intel systems
After 14 months of uptime, the system logged "The array has reported an undefined fault. Fault ID 176" every 3–4 hours. No drive failures showed in the GUI. the array has reported an undefined fault. fault id 176
Ensure the storage array and all its sub-components are running on compatible firmware. Incompatibility is a primary driver of "undefined" error codes. Check Power and Environment: dmidecode -t processor mcelog --client # on Intel