Compatibility requirements
- System resources – Both systems must have similar memory, CPU, and disk space. Both systems must also have the same disk partitions, which are set during initial install and are identified internally by a partition number.
- FIPS mode – Both systems must have the same FIPS mode configured. FIPS mode cannot be changed when HA is configured.
- SMS certificate key – Both systems must have compatible SMS certificate key sizes. For example, the active SMS cannot be running a 1K key and the passive SMS be running a 2K key. You cannot install the 2K key in either SMS while the SMS is running in HA. To install a 2K key, disable the cluster, install the 2K key on each SMS, and then reconfigure the cluster. A 2K key is required on both systems if HA is configured in FIPS mode.
- SNMP – Before configuring the SMS HA cluster, you must enable and configure the SNMP settings
on each SMS server in the cluster separately. After the SMS HA cluster is established,
you cannot enable, disable, or modify the SMS HA cluster’s SNMP settings for the passive
SMS server. If you plan on using SNMP to monitor and manage your SMS servers, configure
and test this monitoring before establishing SMS HA. To modify SNMP settings after
configuring SMS HA, you have to disable the cluster, modify the SNMP settings on both
SMS servers separately, and then re-establish the SMS HA cluster.
Note
Because the SNMP EngineID must remain fixed for each SMS Server, SNMP settings do not synchronize during SMS HA Cluster configuration. If you have broken SMS HA and then migrated your SMS from an earlier SMS version to the current version, verify the SNMP settings for each SMS before re-establishing the SMS HA cluster.
Unsupported features
- IPv6 – SMS HA is not supported with IPv6. If the SMS is IPv6 only, the HA configuration button shows an error when selected.
- External database replication – External database replication and SMS HA features both leverage the same functionality in the underlying database. The SMS database does not support replication to multiple destinations; therefore, Trend does not recommend using SMS HA and external database replication at the same time.