When a device is discovered by more than one collector, NetMRI deduplicates the device to prevent unnecessary load on the device as well as data conflicts. Initially, the collector that first discovered the device is set as the temporary management collector. Next, NetMRI selects the permanent management collector for said the device.
Also, if If a device is discovered through different network views and different IP addresses, it is not deduplicated. If a device is discovered through different IP addresses but through one network view, it is deduplicated.
Deduplicated devices are marked by special icons with the following icons next to their IP address. This means the following:
| Icon | Tooltip Message | Description |
|---|
| This device has duplicates on other collectors. | Two or more collectors, including the current one, discovered the device, i.e. the device has "duplicates" on multiple collectors. The current collector is set as the management collector for the device. The other collectors do not poll the device anymore to avoid unnecessary load. |
| This device is managed by another collector. | The current collector discovered the device along with other collectors. Another collector, not the current one, was assigned as the managing one. The device shows “Unlicensed” in the License Status column as the current collector does not manage it. |
As to how NetMRI assigns the management collector for a deviceFor more information, see Algorithm for Assigning Management Collector.
The management collector is assigned to a device using the algorithm only once. However, you can change the management collector manually in the Device Viewer. To open the Device Viewer, click the device IP address of the device. The Management Status page of the Device Viewer opens, showing the current device status on the management collector. To learn how to change the management collectorFor more information, see Manually Changing Management Collector.
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For devices that did not undergo deduplication, load balancing is automatically performed automatically between collectors. NetMRI determines the less loaded collector in terms of devices and "moves" extra devices from other collectors to this collector. For information, see Deduplication and Load Balancing Settings.
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