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PREINSTALLATION
• Two or more standalone systems can be linked together to
enable the transfer of information between systems using
two processors. With a modem and the appropriate
communications controller installed in one of the DEC
processors, data from another processor can be submitted to
the LPS using that processor.
• DEC systems may be located in different geographic
locations. Standard telephone lines form the
communications network across town or cities. The linkage
for the LPS remains the same: the appropriate DEC
communications controller, XPMF/VMS software in the host
processor, and XPMF/VMS hardware in the LPS.
• Terminals, processors, and other devices may be linked in a
Local Area Network (LAN) using Ethernet. The LPS is
connected using the communications controller linked to
one of the host processors (the “client”) in the LAN. As a
result, all processors connected to the Ethernet network
access the LPS through the client processor. A modem is
used to transmit print data to the printer.
• Wide Area Network (WAN) connects sites or multi-vendor
systems that may be located around the world. Independent
of the complexity of the network configuration, the
connectivity to the LPS remains the same.
• VAX systems and intelligent storage controllers may be
clustered. In a VAX cluster system, the various devices are
connected to a common distribution unit, such as an SC008
Star Coupler. Each processor operates independently, with
common access to the various storage elements connected
to the intelligent I/O controllers (servers). The result is the
linkage of numerous computer resources that appear to the
user as a single system. Print data is transmitted from the
cluster to the LPS using a modem.
Note: The modem is optional if your LPS is within 50 ft/15.2 m
of the DEC processor.
Components
Table 1-19 describes the hardware and software components
your LPS requires when connecting to DEC equipment.
Table 1-19. Components
Hardware The hardware interface residing in the LPS is the DMR11
Synchronous Controller. It is installed into the LPS system
controller with an adapter kit and cable supplied by Xerox.
Software The XPMF/VMS interface is supported by Xerox software on
both the LPS and the VAX system.
The VAX-resident software performs the print supervisor
(symbiont) role in the DEC print architecture and enhances the
uses of the LPS. Refer to the Xerox Print Management Facility—
VMS Version Installation Guide for additional information on
the installation of this software.
1-24 XEROX 4050/4090/4450/4650 LPS INSTALLATION PLANNING