RH2285 12*1T SATA Disk，RAID configuration（2RAID1 5RAID5 5RAID5）, the system is installed in 2RAID1（Slot 0 and Slot1）, others are used as data disk.
The front board indicator of Slot 0 is off, the red alarm light flashes. The client claims 400 disk fault.
1. Reinsert slot0 disk, and replace slot1 disk, then enter RAID configuration interface.
2. Set slot0 disk to good, rescan disks, and it reminds RAID information, then import the information.
3. Configure slot1 disk to replace the fault disk of before RAID group, set the state to rebuild.
4. Configure boot order of RAID group, click virtual drives in the left, enter boot interface, as follow:
5. Reboot the device.
After the operation is moved from the server, it demands to replace the disk of slot 0 online. The light is also not on, the indicator flashes. Connect the monitor, restart the device and enter RAID card configuration. It shows slot1 disk fault. The indicator gets off after pulling out slot1 disk. The problem is slot1 disk fault. For slot0, it is the fault of indicator, the disk is OK.