Epson RC620 CU Manual page 136

Setup & Operation 15. RAID
(4) Click the <Rebuild RAID volume now>.
(5) Click the <Yes> button.
The restoration (rebuild of the volume) starts.
This process requires approx. 40 minutes.
(6) When the restoration is completed, it displays as below.
(7) Exit the Intel Matrix Storage Console.
120 RC620 Rev.8