Configuration: About Your Host 89
• 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. 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 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. 
Windows
To start or stop the host context agent:
1
Click 
Start
 Settings
 Control Pane
l Administrative Tools
 
Services
. 
or 
Click 
Start
 
Administrative Tools
 
Services
. 
2
From the list of services, select 
Modular Disk Storage Manager Agent
.
book.book  Page 89  Monday, June 21, 2010  11:00 AM