NonStop NS-Series Operations Guide (H06.12+)

> SCF CONTROL DISK $*,REFRESH
9. If the system is a member of a ServerNet cluster, HP recommends that you first remove the
system from the cluster. To remove the system from the cluster, refer to the ServerNet Cluster
6780 Operations Guide (for 6780 switches) or the ServerNet Cluster Manual (for 6770 switches).
Stopping the System
Stopping a system halts each processor (terminating all processes running in each processor) on
the system in an orderly fashion.
Alerts
Before stopping a system:
• Stop applications, devices, and processes in an orderly fashion. See “Stopping the System”
(page 166).
• To maximize application availability, make stopping the system a planned event whenever
possible.
Halting All Processors Using OSM
To place processors in a halt state and set the status and registers of the processors to an initial
state:
1. Prepare the system by shutting down applications and performing all tasks in “Stopping
the System” (page 166).
2. Log on to the OSM Low-Level Link.
3. On the toolbar, click Processor Status.
4. In the Processor Status dialog box, select all processors to be halted.
To select multiple processors, use the Shift key, but the processors must be in numerical
order. For example, you can select processors 2, 3, and 4, but not 2 and 4.
5. From the Processors Actions menu, select Halt.
6. Click Perform action.
7. A message box asks whether you are sure you want to perform a halt on the selected
processors. Click OK.
Powering Off a System
Use OMS or SCF to place most system components in a low-power state before you remove
power to all system components. Any attached I/O enclosures power off completely. The Disk
Drive enclosures are not placed in a low power state after the power off action or command.
To power off a system:
1. Stop applications. See “Stopping Application, Devices, and Processes” (page 164).
2. Use either of these methods to place most system components in a low-power state:
• “System Power-Off Using OSM” (page 166)
• “System Power-Off Using SCF” (page 167)
3. Shut off AC power to all peripheral devices.
4. Locate the circuit breaker that controls the power cords.
5. Switch the breakers off.
System Power-Off Using OSM
1. Log on to the OSM Service Connection.
2. Right-click the System object.
166 Starting and Stopping the System