How to troubleshoot a RAID controller alarm?

The first rule is data safety: do not blindly pull drives or reboot. Correct process: check the RAID management tool (e.g. MegaRAID Storage Manager) to identify the failed drive and whether the array is degraded; record the alert and drive position; continue running if redundancy remains, otherwise back up before swapping the drive. ZhongLianDa engineers can assist remotely or attend on-site for emergencies, and we stock large quantities of original RAID controller spares.