SNAX/XF and SNAX/APN Configuration and Management Manual

Introduction to SCF for SNAX/XF and SNAX/APN
SNAX/XF and SNAX/APN Configuration and Management Manual—425836-006
11-2
Configuration Prerequisites

Allow or prevent application opens of specified LUs or groups of LUs

Take traces of service manager and line handler processes

Define which line-handler process of a NonStop process pair is the primary
process

Stop lines, PUs, LUs, and active sessions between LUs, either in an orderly
manner or abruptly in case of an emergency
Configuration Prerequisites
Before you can use SCF to configure and control a SNAX/XF or SNAX/APN
subsystem, the service-manager and line-handler processes must be defined to the
WAN subsystem. For information about how to do this, use the following references:

Section 2, WAN Subsystem Objects for SNAX Processes

ServerNet Communications Configuration and Management Manual
For NonStop S-series servers, SNAX/XF and SNAX/APN use a new device called the
ServerNet wide area network (SWAN) concentrator, which replaces all of the earlier
WAN controllers, including the 3604, 3605, 3650 controllers and the 6100
communications subsystem.
Differences Between Old and New SCF
Subsystems
The new SCF subsystems created for the NonStop S-series servers differ from the
SCF subsystems that exist for NonStop K-series servers in the following ways:

The new SCF subsystem managers (including the WAN manager which manages
wide-area network connections such as SNAX/XF and SNAX/APN) are configured
as generic processes rather than I/O processes. If a subsystem manager is
abnormally terminated, the $ZPM persistence manager immediately restarts it.

The processes created in the new SCF subsystems are persistent. If the system
comes down, these processes are restarted as soon as the system is loaded. Any
SCF devices and subdevices from NonStop K-series servers must be reconfigured
after a system load.

If you are managing a NonStop K-series server from a NonStop S-series server,
you can use the old SCF commands and subsystems. Any commands and
subsystems new for the NonStop S-series servers, however, have no meaning on
a NonStop K-series server. For more information, see the SCF Reference Manual
for G-series RVUs.