Backup And Restore; Maintenance - Grandstream Networks UCM630 A Series User Manual

Web UI Access for UCM
After HA setup is completed, the system admin can use the cluster IP address to log in to the current active UCM for
configurations. The cluster IP address is always bound to the active UCM. For example, assuming HTTP/HTTPS port is 8089,
the system admin can access UCM using URL https://cluster_IP:8089.
System admin can log into the current active UCM using https://cluster_IP:8089 or https://activeUCM_IP:8089.
If the system admin logs into the standby UCM's web UI by using the standby UCM IP https://standbyUCM_IP:8089 and
attempts to modify configurations, it will not be allowed. The system will prompt that configuration is restricted on the
standby UCM.
Critical Note
HA setup will synchronize up admin login information from the active UCM to the standby UCM. Therefore, when the system
admin logs in the UCM web UI using the active UCM IP, standby UCM IP or the cluster IP, the active UCM's login information
always needs to be used.
Log in Wave
After HA configuration, the login URL for Wave may be changed. Users can log in to Wave using the following addresses:
1. Log in via IP.
Since the UCM providing RemoteConnect service can be the primary or secondary UCM, the user should always use the
cluster IP to log in to Wave. For example, https://cluster_IP:8089/gswave#.
1. Log in via domain name.
No matter whether failover happens, users could always use the domain name assigned from the GDMS Remote Connect
service, which is determined by the initially configured primary UCM.
Failover during Call
When the active server encounters a failure, if there is an ongoing call on the active server, the switchover process will only
cause a few seconds of audio cut off and then it will be recovered automatically.
Notes
Currently, if the call is using UDP as transport method, the call can be recovered after switchover. However, if the call is
using TCP as transport method, the call cannot be recovered after switchover.
Point-to-point calls such as audio call or audio meeting can be recovered after switchover. However, for calls using ring
group, call queue and other call features and services, the call will not be automatically recovered.
Data Sync
HA setup provides data sync mechanism:
1. After UCM boots up, the standby UCM will send requests for all the data on active UCM and perform data sync. Every
time when the active UCM has configuration change, it will also synchronize up the data to the standby UCM
automatically and immediately.
2. Data sync is triggered in real-time manner. It not only synchronizes up configuration data, but also extensions, voicemail,
CDR, etc.
3. Every day at midnight, a full backup will be performed to ensure active and standby UCM always have the same data on
daily basis.

Backup and Restore

For backup restore, the admin needs to log in to the active UCM and restore the backup file on the active UCM first. UCM
devices will reboot automatically. Once the UCM finishes booting up, the standby UCM will start synchronizing up data from
the active UCM to restore the backup as well.

Maintenance

In HA setup, the system admin can check HA-related alerts under UCM web UI's system events page to learn if there is any
abnormal event related to HA. According to the alerts, the admin can further diagnose by checking the event time and logs
with more details.