When a hard drive member of a RAID 1 volume fails or is disconnected, the RAID 1 volume is reported as "Degraded." If either of these scenarios occurs, data mirroring is lost and the system can only use the functional member.

To re-establish data mirroring and restore data redundancy, refer to the applicable procedure below:

Missing Hard Drive Member

1. Make sure the system is powered off.
2. Reconnect the missing hard drive.
3. Restart the system. The rebuild will occur automatically.

Failed Hard Drive Member

There are 3 methods available.

Using Basic Mode of the Intel® Matrix Storage Console

1. Make sure the system is powered off.
2. Replace the failed hard drive with a new one that is of equal or greater capacity.
3. Power on the system.
4. After the operating system is running, select the Intel Matrix Storage Console from the Start Menu or click the Intel Matrix Storage Manager tray icon.
5. Click on the icon in front of Restore RAID 1 data protection as displayed in the following example:
   
6. Click on the icon in front of Rebuild RAID& volume now as displayed in the following example:
   
7. Select Yes to confirm.

Using Advanced Mode of the Intel Matrix Storage Console

1. Make sure the system is powered off.
2. Replace the failed hard drive with a new one that is of equal or greater capacity.
3. Power on the system.
4. After the operating system is running, select the Intel Matrix Storage Console from the Start Menu or click the Intel Matrix Storage Manager tray icon.
5. Click on the View menu and select Advanced Mode.
6. Right-click on the non-RAID hard drive in the device tree and select Rebuild to this Hard Drive as shown in the following example:
   

Using the Intel® Matrix Storage Manager option ROM

1. Make sure the system is powered off.
2. Replace the failed hard drive with a new one that is of equal or greater capacity.
3. Power on the system.
4. When the Intel Matrix Storage Manager option ROM status screen appears during POST, press the Ctrl and i keys at the same time to enter the Intel Matrix Storage Manager option ROM user interface.
5. A dialog titled "Degraded RAID 1 Detected" will be displayed that asks you to "Select the port of the destination disk for rebuilding." Use the up or down arrow keys to select the new hard drive and press the Enter key.
6. Select option 4: Exit and press the Enter key.
7. Press the Y key to confirm.
8. After the operating system is running, select the Intel Matrix Storage Console from the Start Menu or click the Intel Matrix Storage Manager tray icon.
9. From the View menu, select Advanced Mode to display a detailed view of the Intel Matrix Storage Console.
10. From the Volumes view in the device pane, select the RAID 1 volume. The status will display "Rebuilding % complete." After the rebuild is complete, the status will display "Normal."

System won't boot to degraded RAID 1 volume

This applies to:

Intel® Matrix Storage Manager