NonStop Systems Introduction

The NonStop Kernel
NonStop Systems Introduction—527825-001
6-18
Transparent Access to Network Resources
Figure 6-11 on page 6-18 shows that authorized users can carry out operations in an
Expand network as easily as in a local system. Users can access network resources
using the same commands that they would use to access resources on the local
system. The only difference is that a node specifier must be added to a remote
program, file, or device name.
As Figure 6-11 shows, the names of NonStop systems begin with a backslash (\). The
user logs on to system \EARTH and starts a Subsystem Control Facility (SCF)
interface program on system \NEPTUNE. The SCF program performs the following
actions:
1. It reads data from files stored on \NEPTUNE.
2. It displays this data on the user’s workstation attached to \EARTH.
3. It accepts data changes from the user.
4. It writes the changed data file back to disk on \NEPTUNE.
5. It ceases execution and frees the user’s workstation.
Having revised the data file, the user starts a diagnostic program on the \SATURN
system. The user instructs the program to use the data file from \NEPTUNE and
directs the output listing to a printer attached to \SATURN.
After exiting from the program, the user could send a mail message to a user on the
\SATURN system indicating that the user can pick up the listing from the printer
attached to \SATURN.
Figure 6-11. The Network as a Single System
Local system
\EARTH
Remote system
\MOON \JUPITER
\SATURN
\NEPTUNE
\EARTH.$TERM
\NEPTUNE.$DATA
VST082.vsd