Adding disk mirroring

Adding disk mirroring to a database device

Select the device icon, then select File | Properties.
Select the Mirror tab.
Select the Mirror Device check box.
Specify the order in which the mirror device is written. Select either:
- Mirror written – The manner in which writes happen. “Serial” is the default (Write to the primary database device is guaranteed to finish before write to the secondary device begins). “Parallel” means that many writes happen at the same time
- Mirror path – The full path name of your secondary device
Specify the path of the mirror device.
Click Apply.

For more information see Using disk mirroring.