NEC Express 5800/320Lc - Manual (Page 80)

3-6 Windows Setup and Operation
4. Select and right-click a disk, and
then execute [Convert to
Dynamic Disk…].
On the [Convert to Dynamic
Disk] dialog box, select the disk
and click [OK].
5. Right-click the volume of the
dynamic disk to mirror and click
[Add Mirror…].
6. On the [Add Mirror] dialog box, select the disk
to mirror and click [Add Mirror].