Dell PowerVault MD3000 - Manual (Page 50)

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About Your Host
Host Context Agent
The host context agent discovers the host topology. The host context agent
starts when the host is started and stops when the host is turned off. 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 any of the following situations occur:
• A new storage array is attached to the host server.
• A host is added while turning on power to the RAID controller modules.
Linux
In Linux, you can stop and start the host context agent from the command
line. Use the following syntax:
SMagent start or SMagent stop .
You will stop and then restart SMagent after performing either of the two
following maintenance tasks.
• 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.
Windows
In Windows, you can stop and start the host context agent from the Services
option of the Administrative Tools. To access the host context agent:
1 Select Start → Settings → Control Panel → Administrative Tools →
Services .
or
Select Start → Administrative Tools → Services.
2 From the list of services, select Modular Disk Storage Manager Agent.