Dell PowerVault 725N (Rackmount NAS Appliance) - Manual (Page 14)

When an MDM device is powered down or is inaccessible from the network, it may take the controller several minutes to show the device as missing. If a
system is inaccessible and the device status is not yet reported as missing, any jobs run on the system may show a pending status. These jobs may never
complete. Also, when the device becomes accessible, it may take several minutes for the controller to report the device as active.
Using the MDM Controller to Administer NAS Devices
The NAS Manager's MDM feature allows you to collectively administer several NAS devices in a data center. MDM also allows you to automate routine processes
such as adding users and querying systems for status information.
From the NAS Manager Controller tab, you can run a job, view alerts and job history, take or release control of individual devices, group individual devices into
sets, and administer multiple devices.
Creating and Using MDM Sets
Use the Create Sets option from the NAS Manager Controller tab to create and manage sets and to administer individual devices contained in sets. The
Create Sets option displays an Object/Task Selector that simultaneously lists up to 100 sets that can be sorted by selecting a column heading. You can also
create or delete sets, modify set properties, or run a job on one or more sets.
To create a new set, perform the following steps:
1. Log in to the NAS Manager.
2. Click Controller.
3. Click Create Sets.
4. In the Tasks list, click New.
5. Type a name and description for the new set.
6. Select the members for the new set from the Devices or Existing sets list, and then click Add.
7. Click OK.
Controlling MDM Devices
Use the Control Devices option from the NAS Manager Controller tab to create or delete device records, group devices into sets, take or release control of
devices, modify device properties, or run jobs on one or more devices.
Creating a New MDM Device Record
1. Log in to the NAS Manager.
2. Click Controller.
3. Click Control Devices.
4. In the Tasks list, click Add Device.
5. Type the name, optional description, and optional MAC addresses for the device you are adding.
6. Click OK.
Grouping Devices into a Set
1. Log in to the NAS Manager.
2. Click Controller.
3. Click Control Devices.
4. In the Name column of the Object/Task Selector on the Devices page, select one or more devices to group into a set.
5. In the Tasks list, click Create Set.
6. On the Create Set page, enter a name and description for the new set.
7. From the Devices or Existing sets lists, add any additional members for the new set.
8. Click OK.
Taking Control of a Device
1. Log in to the NAS Manager.
2. Click Controller.
3. Click Control Devices.
4. In the Device Name column of the Object/Task Selector on the Control Devices page, select the device you want to control.
5. In the Tasks list, click Take Control.
If the operation completes successfully, the Object/Task Selector on the Devices page is redisplayed, and the status of the device chosen shows as
Active (or Missing if the device did not respond to a heartbeat request).
If the operation did not complete successfully, an error page is displayed, giving you the option to retry or terminate the operation.