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Configuration: About Your Host 95
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
Mappings tab of the AMW. For more information, see "Using the Mappings
Tab" on page 90.
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
MDSM 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 and 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
MDSM.
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.
Linux
To start or stop the host context agent, enter the following command at
the prompt:
SMagent start
SMagent stop
You 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.
book.book Page 95 Tuesday, June 18, 2013 3:03 PM