It is not necessary to attempt the rebuild process before changing the drive. Depending on your chassis configuration, you may add the hot spare drive before removing the failed drive. It appears that the system has a hot swappable backplane (according to the screenshot you posted).
If you cannot add more drives to the system then you can do the following:
- Mark the failed drive Offline
- Turn off the system if unable to confirm whether there is a backplane or not.
- Replace the drive.
- Boot to your Operating System and log in to Intel® RAID Web Console 2.
- Right click the replacement drive and mark it as a hot spare or you can simply select the option to rebuild. This would rebuild to the array that is shown as degraded.
Feel free to contact our Intel Customer Support team for further assistance on the rebuild process of your array.