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Enabling a Second Accessory Server (Failover)
Select Enable 2nd Accessory Server if running two accessory Servers in a failover (high-availability) configuration. In a high-avail-
ability configuration, the accessory Server that you configure first will act as the primary accessory Server; the secondary server will
come online only if the primary falls offline.
You only need to run the initial setup on the secondary server. The primary server transfers settings to the secondary automatically. You
cannot configure the secondary server independent of the primary server; in the event of a failover, you must wait until the original
primary server comes back online to make configuration changes to the accessory Server.
NOTE: The failover model supports failure of a single server in a dual CMG environment. It does not provide protection against more than
one failed server (e.g. 2 CMG’s, 2 Accessory Servers, or a CMG and an Accessory Server) in this sort of environment.
Using the Accessory Server as an Arbiter
Select Run Arbiter if your CMG environment contains an even number of servers and you want the accessory Server to act as the
cluster’s arbiter. The arbiter serves as the deciding vote in elections determining the primary server for the cluster, but does not actually
store the VideoXpert database or serve data to users.
NOTE: If you re-image or replace your primary Core server, you must disable, and then re-enable the Arbiter service, so that the Accessory
Server will recognize the new server.
Configuring DHCP Services
Select Run DHCP if you want the accessory server to act as a DHCP server for your VideoXpert network. Provide the subnet IP, Netmask,
Broadcast Address, Gateway Address, and IP Range to configure DHCP services. Select ranges with an ample number of extra addresses
to cover any cameras or VideoXpert devices you may add to the system later; presently. To add additional IP ranges, click Add Another.
You cannot set or delete MAC reservations through the accessory Server interface at this time.
Configuring NTP Services
You must configure the accessory server as an NTP server or client before you can save your accessory server’s configuration. Servers
and devices within VideoXpert must be time-synchronized. The accessory server can act as an NTP client if your VideoXpert network
already contains an NTP server; if you opt to run as an NTP client, you must provide the address of an NTP server on the network. Other-
wise, you should configure the accessory server as an NTP server. When enabling the NTP server, you can provide time in one of two
ways:
• Get time from another NTP server: select this option to get and verify time against another time server; you must prov
ide the
address of the NTP se
rver providing time before you can save your configuration.
• Set time manually. Select this option to manually set a date, time, and timezone for the VideoXpert system.
NOTE: Changing time within an active VideoXpert system is likely to cause errors in data access and retrieval.
Server Status
Go to the Status page of the Accessory Server’s web interface to view the up/down status for the Accessory Server’s services. If DHCP
is enabled, the Status page will also list leases.