NEC EXPRESS5800 N8800-099F - Manual (Page 83)

Windows Setup 4-31
7. Right-click the dynamic disk volume for creating mirror, and click [Add Mirror…].
IMPORTANT:
„ When you click [Add Mirror…], the [Logical Disk Manager] dialog box
will appear. This is not an error. Click [OK].
„ If you restart the system while creating mirror, mirroring will not be
completed. Do not reboot the system until the mirroring process is
completed.
TIPS:
Creating mirror takes about 20 minutes for 10GB hard disks.
8. Confirm that the mirroring of the HDD has been started in the Disk Manager.
9. When the “Resynching” shown in 8 changes to “Healthy,” disk mirroring has completed.