4.4.4 Site server configuration

You can provide load balancing for the management server or network by specifying site servers as the storage locations for operation logs collected from online managed computers or as the relay sites for the distribution function. This configuration is called the site server configuration. For details about site server prerequisites, see 4.2.4 Site server prerequisites.

Use the site server configuration in the following cases:

When acquiring operation logs and managing more than 3,000 devices
When using the distribution function and managing more than 5,000 devices, but not acquiring operation logs.

When acquiring operation logs, one site server can manage a maximum of 1,000 devices. When not acquiring operation logs, one site server can manage 3,000 devices.

Tip: The site server cannot be installed on the management server.

The following figure shows a site server configuration.

[Figure]

Site servers that store operation logs or that are used as the relay sites for the distribution function can be set for each network segment.

To improve the device availability, set a group of site servers (site server group) for each network segment rather than setting individual site servers. When you define a site server group, you can set the priority for each site server in the group as required to control the connection destinations. By setting a random priority so that an unspecified site server is connected each time, you can prevent the load from being concentrated on a specific server.

Storage location for operation logs

If you specify site servers as the storage locations for operation logs, the operation logs collected from online managed computers are stored in the site servers. The operation logs stored in each site server can be referenced from the operation window. This prevents collected operation logs from using too much disk space on the management server or increasing the network load. When you use site servers to store operation logs, we recommend that you use only one site server in the site server group specified for each network segment. This causes operation logs for each computer to be collected on one site server, thus facilitating management of operation logs.

Important note: When you use site servers to store operation logs, from the viewpoint of load balancing and operation efficiency, we recommend that you store all operation logs on the site servers, not on the management server.

Important note: In a NAT environment, the site servers specified to store operation logs must be placed in the same network segment as the management server.

Relay site for the distribution function

If you specify site servers as the relay sites for the distribution function, distribution packages are automatically downloaded from the management server to the site servers. The packages will then be distributed from the site servers to the online management agents. This reduces the network load during package distribution to the online management agents. When you use site servers as relay sites for distribution, we recommend that you use multiple site servers in a site server group. By doing so, if an error occurs in one site server, another site server can be connected, thus implementing a robust system. In this case, you can assign the connection priority for each site server in the site server group, or set a random priority. Examine the configuration of the site server groups based on the consideration of how to balance the load.

The site servers used as relay sites for distribution can also be used for distributing the following data other than packages.

Security policies
Components such as an agent or a network monitor agent

Tip: Different site server groups can be specified as the storage locations for operation logs and as distribution relay sites. You can set up a system appropriate for the environment. For example, use a site server group for computers with sufficient hard drive sizes as the storage locations for operation logs, and use other site server groups as distribution relay sites.

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