Configure Load Balancing and Failover

You can configure Delegation Servers to balance the workload of data processing among two or more Delegation Servers in [Delegation Server Failover/Load Balancing Groups] in the navigation tree.

Specify the priority Delegation Servers for authentication, capture, and print functions. Also, if the primary Delegation Server fails to respond, job processing is automatically carried over by the secondary Delegation Servers.

Click [Server Management] and click [Delegation Server Failover/Load Balancing Groups].
Click [Add].
Enter the Name and Description.

Configure the necessary information:

Item	Description
Connection Timeout	Specify the time limit until the connection from the device to the server times out. Configure [Connection Timeout] according to the following formula: Connection Timeout × (Number of Failover Servers + 1) < 60sec The default is 4 seconds.
Processing Timeout	Specify the time limit until the request sent from the device to the server times out. Configure [Processing Timeout] according to the following formula: Processing Timeout × (Number of Failover Servers + 1) < 60sec The default is 30 seconds.
Recovery Check Interval	Removes the job request from the list until a retry request is received from the device when the server fails to process the job request. Specify the time limit until the job request is removed. The default is 1 minute.

Item

Description

Connection Timeout

Specify the time limit until the connection from the device to the server times out.

Configure [Connection Timeout] according to the following formula: Connection Timeout × (Number of Failover Servers + 1) < 60sec The default is 4 seconds.

Processing Timeout

Specify the time limit until the request sent from the device to the server times out.

Configure [Processing Timeout] according to the following formula: Processing Timeout × (Number of Failover Servers + 1) < 60sec The default is 30 seconds.

Recovery Check Interval

Removes the job request from the list until a retry request is received from the device when the server fails to process the job request. Specify the time limit until the job request is removed.

The default is 1 minute.

Click the [Authentication], [Capture], [Print], or [PC Client Update] tab, and then select the server to balance the workload.

Do the following to add servers.
1. Click [Add].
2. Click [All Servers], or select a server group and then display a server.
3. Select a server, and then click the arrow right button to add it as a target server to balance the workload.
4. Click [OK].
5. Click up or down buttons to specify the priority among servers.
The server on the top has the highest priority, and when the timeout period elapses, the processing is carried over to the other servers according to the order in the list.

Click [Save] when the configuration is complete.

When the failover and load balancing groups for Delegation Servers are specified in [Configuration] → [Streamline NX Embedded Settings] → [Embedded Setting], be sure to specify more than one Delegation Server in this setting on each of the [Authentication], [Capture], and [Print] tabs.These functions are processed via the Delegation Servers and cannot be used if the servers are not specified. When a Delegation Server (Delegation Server Failover/Load Balancing Groups) is not specified in [Embedded Setting], the Delegation Server with the installed Streamline NX Embedded Application performs authentication, printing, and delivery functions.