NonStop S-Series Operations Guide (G06.29+)

Processors: Monitoring and Recovery
HP NonStop S-Series Operations Guide—522459-009
11-12
Enabling or Disabling System Freeze
Enabling or Disabling System Freeze
The Enable System Freeze tool is for debugging purposes only. Its intent is for use
only under the direction of a service provider. Upon activation of Enable System
Freeze, when one freeze-enabled processor halts, all other freeze-enabled processors
also halt. The default setting is Disable System Freeze.
Freeze-disabled processors are not affected by any System Freeze action. When
Disable System Freeze is active and one freeze-disabled or freeze-enabled processor
halts, the halt is not propagated to other processors.
Use the OSM or TSM Low-Level Link to perform the Enable System Freeze and
Disable System Freeze actions. To check the System Freeze attribute, use the TSM
Service Application or the OSM or TSM Low-Level Link.
Checking if System Freeze Is Enabled or Disabled Before System
Discovery
1. Log on to the OSM or TSM Low-Level Link.
2. On the toolbar, click System Actions.
The Attributes dialog box appears.
3. In the Attributes dialog box, check the System Freeze attributes.
Checking if System Freeze Is Enabled or Disabled Using the TSM Service
Application or OSM
or TSM Low-Level Link (After System Discovery)
1. In the tree pane or view pane of the Management window, select the system.
2. On the Attributes tab of the details pane, check the System Freeze attribute.
Enabling or Disabling System Freeze Using the OSM or TSM Low-Level
Link (Before System Discovery)
1. On the toolbar, click System Actions.
The Attributes dialog box appears.
2. Click Show Actions.
The Actions dialog box appears.
3. In the Actions dialog box, select Enable System Freeze or Disable System
Freeze.
Caution. Do not Enable System Freeze if you are using the server in a production
environment. When Enable System Freeze is active, any ServerNet disruptions such as cable
replacement or CRU insertion can generate a system freeze. If Enable System Freeze is
active, Disable System Freeze before performing a service operation. Perform this operation
only if instructed to do so by your service provider.