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SonicOS 5.8.1 Administrator Guide
Replacing a SonicWALL Security Appliance
If your SonicWALL security appliance has a hardware failure while still under warranty,
SonicWALL will replace it. In this case, you need to remove the HA association containing the
failed appliance in MySonicWALL, and add a new HA association that includes the
replacement. If you contact SonicWALL Technical Support to arrange the replacement (known
as an RMA), Support will often take care of this for you.
After replacing the failed appliance in your equipment rack with the new unit, you can update
MySonicWALL and your SonicOS configuration.
Replacing a failed HA Primary unit is slightly different than replacing an HA Secondary unit.
Both procedures are provided in the following sections:
• “Replacing an HA Primary Unit” on page 1153
• “Replacing an HA Secondary Unit” on page 1153
Replacing an HA Primary Unit
To replace an HA Primary unit, perform the following steps:
Step 1 In the SonicOS management interface of the remaining SonicWALL security appliance (the
Backup unit), on the High Availability screen, uncheck Enable High Availability to disable it.
Step 2 Clear the Backup SonicWALL Serial Number text box.
Step 3 Check Enable High Availability.
The old Backup unit now becomes the Pr
imary unit. Its serial number is automatically displayed
in the Primary SonicWALL Serial Number text box.
Step 4 Type the serial number for the replacement unit into the Backup SonicWALL Serial Number
text box.
Step 5 Click Synchronize Settings.
Step 6 On MySonicWALL, remove the old HA association.See “Removing an HA Association” on
page 1152.
Step 7 On MySonicWALL, register the replacement Sonicwall security appliance and create an HA
association with the new Primary (original Backup) unit as the HA Primary, and the replacement
unit as the HA Secondary. See “Associating an Appliance at First
Registration” on page 1147.
Step 8 Contact SonicWALL Technical Support to transfer the security services licenses from the
former HA Pair to the new HA Pair.
This step is required when the HA Primary unit has failed, because the licenses are linked to
the Primary unit in an HA Pair.
Replacing an HA Secondary Unit
To replace an HA Secondary unit, perform the following steps:
Step 1 On MySonicWALL, remove the old HA association. See “Removing an HA Association” on
page 1152.
Step 2 On MySonicWALL, register the replacement SonicWALL security appliance and create an HA
association with the original HA Primary, using the replacement unit as the HA Secondary. See
“Associating an Appliance at First Registration” on
page 1147.