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User Guide for Polycom® RMX™ 500 and Polycom® RMX™1000 Systems
(Conference on Ports)
15-5
Hot Standby
The RMX system supports hot standby, allowing two MCU devices
connected within the same LAN to treat each other as a standby machine for
data synchronization. When a power outage, network disconnection, reboot
or shutdown occurs on the master MCU or some modules cannot work
normally, the standby MCU will automatically switch and take over the
services on the master MCU to ensure that the ongoing conferences can
resume quickly.
When the master device and slave device configured as standby machines for
each other are initially started, the slave device will synchronize all the
configurations and status information on the master device which needs to be
backed up and restored, except the small bits of information listed below:
• LAN1/LAN2 and routes in IP network service configurations
• User-defined conference skin pictures
• SSL certificate
• Signaling Monitoring
• Hardware Detection
• User Connections
• IVR
Then, when both the master device and slave device are in working status,
the master device will synchronize the corresponding updates to the slave
device if there are any changes to the status information (such as adding
device users, conference profiles, conference rooms, etc.). Some of the
conference scheduling configurations, such as adding reserved conferences or
scheduling temporary conferences, will also be updated in the slave device
but won't be activated until the slave device has been turned into a master
device and the relevant resources are available. During status
synchronization, you cannot modify the configurations in the slave device
which need to be synchronized from the master device.
By synchronizing the configurations and status information, the slave device
can restore the devices and currently-held conferences as quickly as possible
when turning into a master device. The conference resumption following the
master-slave switching has the following restrictions:
• The resumed conference's start time on the conference property page is
calculated in accordance with the time when the resumed conference is
actually started, which is different from the original conference's start
time and duration.
• If the small pane in a conference's multi-screen window is specified as
Auto and then the conference is resumed, the multi-screen layout may be
different from the multi-screen status before switching occurs.
• If you select Manual Dial-out when a conference is created, the system
won't automatically call an endpoint when the conference is resumed. All
endpoints will be offline.