The Device Refresh schedule lets you define how often a device contacts the ZENworks Server to update information such as policies and bundles.
During a scheduled device refresh, data from the ZENworks Server cache is read and delivered to the device. Therefore, if an action is assigned to a device you need to wait until the server cache is updated with the assignment, which is determined by the value specified in Assignment Optimization Settings. For more information on Assignment Optimization Settings, see Infrastructure Management Settings in ZENworks Management Zone Settings Reference.
For example: If a bundle is assigned to a device and the Refresh Device quick task is executed immediately, then the bundle might not deploy on the device. If you want to install the bundle immediately, you can instead execute the Install Bundle quick task.
This schedule can be defined at three levels:
Management Zone: The schedule is inherited by all device folders and devices. To configure this setting, navigate to Configuration > Management Zone Settings > Device Management > Device Refresh and Removal Schedule.
Device Folder: The schedule is inherited by all devices contained within the folder or its subfolders. Overrides the Management Zone refresh schedule. To configure this setting, navigate to Devices > <Folder (Details)> > Settings > Device Management > Device Refresh and Removal Schedule.
Device: The schedule applies only to the device for which it is configured. Overrides the refresh schedules set at the Management Zone and folder levels. To configure this setting, navigate to Devices > <Select a Device> > Settings> Device Management > Device Refresh and Removal Schedule>
NOTE:If you are configuring this setting at a Device Folder or at Device level, then you need to click Override or else the default setting will apply.
This option ensures that for multiple devices that have the same refresh schedule, the ZENworks Server does not initiate their refresh at the same time. The default value is 120 minutes and the minimum value that you need to set is 60 minutes. For example, if you have 1000 devices with the same refresh schedule, you might overburden your ZENworks Server. By selecting this option, the server waits a randomly generated amount of time before initiating the refresh on these devices.
To define the refresh schedule, fill in the following fields and click Apply to save the settings:
Days, Hours, Minutes: Specifies the maximum amount of time within which the mobile devices should refresh. For example, to set the refresh time as 8.5 hours, you would specify 0 Days, 8 Hours, 30 Minutes.