Procedure of hot-swapping hard drive when a drive crashes in RAID 1

About RAID 1
RAID 1 disk mirroring provides highly secure data protection. You can use two hard drives of the same capacity to create a RAID 1 array. The RAID 1 creates an exact copy of data on the member drives. RAID 1 protects data against single drive failure. The usable capacity of RAID 1 is the capacity of the smallest member drive. It is particularly suitable for personal or company use for important data saving.

Logical volume status when RAID 1 operates normally
When RAID 1 operates normally, the volume status is shown as Ready in the Current Disk Volume Configuration section.

When a drive fails, follow the steps below to check the drive status:

1. The server beeps for 1.5 sec twice when the drive fails.
2. The Status LED flashes red continuously.
3. Check the Current Disk Volume Configuration section. The volume status is In degraded mode.
   
4. You can check the error and warning messages for drive failure and disk volume in degraded mode respectively in the Event Logs.
   
   Note: You can send and receive alert e-mail by configuring the alert notification. For the settings, please refer to the System Settings/ Alert Notification section in the user manual.

Install a new drive to rebuild RAID 1 by hot swapping

Please follow the steps below to hot swap the failed hard drive:

1. Prepare a new hard drive to rebuild RAID 1. The capacity of the new drive should be at least the same as that of the failed drive.
2. Insert the drive to the drive slot of the server. The server beeps for 1.5 seconds twice. The Status LED flashes red and green alternatively.
3. Check the Current Disk Volume Configuration section. The volume status is Rebuilding and the progress is shown.
   
4. When the rebuilding is completed, the Status LED lights in green and the volume status is Ready. RAID 1 mirroring protection is now active.
5. You can check the disk volume information in the Event Logs.
   

Note: Do not install the new drive when the system is not yet in degraded mode to avoid unexpected system failure.