How to Remove an High Availability (HA) association on the Mysonicwall.com

You can remove the association between two SonicWall security appliances on mysonicwall.com at any time. You might need to remove an existing HA association if you replace an appliance or reconfigure your network. For example, if one of your SonicWall security appliances fails, you will need to replace it. Or, you might need to switch the HA Primary appliance with the Backup, or HA Secondary, unit after a network reconfiguration. In either case, you must first remove the existing HA association and then create a new association that uses a new appliance or changes the parent-child relationship of the two units. 

Procedure:

To remove the association between two registered SonicWall security appliances, perform the following steps:

Step 3: On the My Products page, under Registered Products, scroll down to find the secondary appliance from which you want to remove associations. Click the product name or serial number.

Step 4: On the Service Management - Associated Products page, scroll down to the Parent Product section, just above the Associated Products section.

See also:

KBID 6234: UTM: How to Configuring High Availability (HA) in SonicOS Enhanced