Asus P9D-E/4L - Manual (Page 120)

ASUS P9D-E/4L 5-15
5. Confirm the volume creation, then click Create Volume to continue.
This process could take a while depending on the number and size of the disks. You can
continue using other applications during this time.
6. Wait until the process is completed, then click OK when prompted.
You still need to partition your new volume using Windows Disk Management before adding
any data.
The created RAID set is displayed in the Volumes list. If you wish to change the settings, go
to Volume Properties.