Dell PowerVault MD3820f - Manual (Page 75)

Removing A Host Group
To remove a host group:
1. In the AMW, select the Host Mappings tab, select the host group node in the object tree.
2. Perform one of these actions:
– From the menu bar, select Host Mappings → Host Group → Remove.
– Right-click the host group node, and select Remove from the pop-up menu.
The Remove dialog is displayed.
3. Click Yes.
The selected host group is removed.
Host Topology
Host topology is the organization of hosts, host groups, and host interfaces configured for a storage
array. You can view the host topology in the Host Mappings tab of the AMW. For more information, see
Using The Host Mappings Tab .
The following tasks change the host topology:
• Moving a host or a host connection
• Renaming a host group, a host, or a host connection
• Adding a host connection
• Replacing a host connection
• Changing a host type
The MD Storage Manager automatically detects these changes for any host running the host agent
software.
Starting Or Stopping The Host Context Agent
The Host Context Agent discovers the host topology. The Host Context Agent starts and stops with the
host. The topology discovered by the Host Context Agent can be viewed by clicking Configure Host
Access (Automatic) in the Configure tab in the MD Storage Manager.
You must stop and restart the Host Context Agent to see the changes to the host topology if:
• A new storage array is attached to the host server.
• A host is added while turning on power to the RAID controller modules.
To start or stop the Host Context Agent on Linux, enter the following commands at the prompt:
SMagent start
SMagent stop
You must stop and then restart SMagent after:
• Moving a controller offline or replacing a controller.
• Removing host-to-array connections from or attaching host-to-array connections to a Linux host
server.
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