Synchronizing Firmware; Synchronizing Settings; Synchronizing Licenses; Technical Faq - Dell SMA 200 Administration Manual

3 Type the idle unit's management IP address in the Management Address field.
NOTE: If a management IP address is not entered, the High Availability Status > Backup Status
field displays as "not available," regardless of the actual status of the unit. Enter the management
IP address of the idle unit if you wish to view the status of it.
4 Click Accept.

Synchronizing Firmware

You can synchronize firmware from the active unit to the idle unit in the HA pair by clicking Synchronize
Firmware.
This allows you to synchronize firmware between the units after upgrading the active unit to a different
version.
NOTE: Synchronizing firmware on an SMA 500v Virtual Appliance is currently not supported.

Synchronizing Settings

Synchronize settings by clicking Accept. Synchronizing settings does not synchronize firmware, but
synchronizes settings from the active to the idle unit.
The appliances in the HA Pair immediately begin to synchronize data from the primary to the backup unit. When
failover occurs and the primary is down, the backup unit becomes Active with the same settings as the primary.

Synchronizing Licenses

To synchronize licenses between two SMA/SRA appliances in an HA pair, log in to
the two SMA/SRA appliances together. Both appliances share the primary unit's license information.
NOTE: There is no function in the Secure Mobile Access management interface to synchronize licenses
between the two units in the HA pair, all license synchronization is controlled through MySonicWALL.

Technical FAQ

1 After HA is enabled, can the idle device be used separately?
No. After HA is configured, only one device can be in use at any one time. During failover the Idle device
becomes Active. Two devices in HA mode cannot be used as separate SMA/SRA appliances.
2 What happens if we remove the HA interface cable from the devices?
If you remove the HA interface cable, then the IDLE device can be re-configured to work as a standalone.
However, this causes an IP conflict, as both the primary and backup devices have the same IP
configuration.
3 Can the HA interface settings be amended, after HA is enabled?
When HA is configured, the 'Edit' button for the HA interface is dimmed and disabled. So the HA
interface setting cannot be changed after the devices are in HA mode.
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