San Manager 4.2 - Step 1: Select the primary volume

Select the primary volume that you want to use in the synchronous mirror relationship.

You must have created the primary volume that you want to use in the synchronous mirror relationship.
The primary volume must be a standard volume. It cannot be a thin volume or a snapshot volume.

When you select a primary volume on the local storage array, the system displays a list of all the eligible volumes for that mirrored pair. Any volumes that are not eligible to be used do not display in that list.

The volume you select holds the primary role in the mirror relationship.

From the Manage page, select the local storage array that you want to use for the source.
Select Actions > Create Synchronous Mirrored Pair.
The Create Synchronous Mirrored Pair wizard opens.
From the list of eligible volumes, select a volume that you want to use as the primary volume in the mirror.
Select Next and go to Step 2: Select the secondary volume.