When you need to rebuild a disk array, you are essentially reconstructing the data on one of its physical drives. In case there is no available spare drive with sufficient capacity, you must replace the failed drive with an unconfigured physical drive and perform a Manual Rebuild.

Identifying the Failed Drive

1. Locate the carrier with the failed drive. The Drive Power/Status LED will be red, and the Drive Activity LED will be dark. This is the physical drive that requires replacement.

Replacement and Rebuild Process

Follow these steps when replacing the drive and initiating the rebuild process:

1. Ensure that the unit is powered on before plugging in the new drive.Open Promise Utility and unlock the utility by clicking the lock symbol at the bottom left of the page.

2. Insert the new drive, and check the Physical Drive status.The status of the new drive should be Unconfigured.If the status is shown as Passthru,change the status of the new drive to Unconfigured in order to enable the Rebuild process and confirm the settings.

3. Please select Background Activities on the top right of the utility and then click the Start button in the Rebuild row.

4. Please check the Target Physical Drive, make sure that it is the replacement drive, and then click Confirm.

5. Once you confirm, the Rebuild process starts immediately. Please do not write any data during the rebuild process, to prevent any data lost. After the PD Progress shows 100%, then you can start writing data to Pegasus again.

Please note that Rebuilding may take several hours, depends on the HDD capacity and file size.

In order to speed up the Rebuild process, you can click Background Activities, and then set the Rebuild Rate to High.