Satellites 81novdocx (en) 16 April 2010When you enable a Collection role on a device, you can assign any ZENworks Primary Server as itsparent server. The Collection role device uploads information only to its parent Primary Server. Ifthe parent Primary Server is not a child of another Primary Server, it writes the information directlyto the database. If the parent Primary Server is a child of another Primary Server, it passes theinformation up to its parent Primary Server, which writes the information to the database.A Satellite with the Collection role collects inventory information, messages (errors, warning,informational, and so forth), and policy and bundle statuses, then rolls that information up to itsparent Primary Server, which in turn either writes to the database directly or passes the informationto its parent Primary Server, which does the database writing. The role includes a roll-up schedulethat you can edit.On the managed device, the Collection module is inactive until you promote the managed device tobe a Satellite with the Collection role or until the Collection role is added to an existing Satellite.7.1.3 Understanding the Content RoleContent consists of bundles, policies, system updates (ZENworks Server and Adaptive Agent), andpatches.If you want to improve content access for a group of devices without creating another PrimaryServer, you can create the Content role on a device. For example, if you have devices that areaccessing a Primary Server outside of their network segment, you can create the Content role on adevice within the network segment to service those devices.The Content role provides the same content delivery service as a Primary Server but requires onlythe Content role module that is installed with the ZENworks Adaptive Agent. The module isinactive until you enable it on the managed device.When you enable the Content role on a device, you assign a Primary Server as its parent contentserver. The Content role Satellite downloads content only from its parent Primary Server. Therefore,any content you want hosted on a Content role Satellite must also be hosted on its parent PrimaryServer.On the managed device, the Content module is inactive until you promote the managed device to bea Satellite with the Content role or until the Content role is added to an existing Satellite.7.1.4 Understanding the Imaging RoleThe Imaging role installs the Imaging services and adds the Imaging role to the device. With thisrole, the device can be used as an Imaging server to perform all Imaging operations, such as takingan image and applying an image within or across subnets by using unicast or multicast imaging.The Imaging role can be used to achieve load balancing for the Primary Server, and also to supportcross-subnet imaging. The Satellite uses ZENworks Control Center to communicate with thePrimary Server for Imaging operations in the Auto mode.On the managed device, the Imaging module is inactive until you promote the managed device to bea Satellite with the Imaging role or until the Imaging role is added to an existing Satellite. Thisactivates the Imaging services on the device, and enables you to perform the Imaging operations inauto and maintenance mode. The Imaging services installed on the device include TFTP, Prebootpolicy, pbserv, and proxy DHCP. All services, except for proxy DHCP, are automatically started.You can manually start or stop the proxy DHCP service from ZENworks Control Center.
