Installation guide

aware of prior to making the system operational. Precautions
must be taken to prevent actions by the console on a partition
from interfering with operation of another partition.
The next section describes logical partitioning terms used throughout the
rest of this document. After reviewing these terms, proceed to section
Section E.4.3.
E.4.2.1 Definition of Commonly Used Terms
You should become familiar with the following terms before configuring
your partitions.
logical partition
A logical grouping of hardware resources (CPU, IO, MEMORY, and console)
within a single system for exclusive use by an instance of the operating
system. A single physical system may have several logical partitions, each
running a separate instance of the operating system.
primary partition
Partition number zero. The partition with the only active console terminal
when partitioning is disabled (that is, all hardware resources are in one
partition).
secondary partition
Partition with a number other greater than zero. One of the partitions that
display the console prompt after the lpinit command is executed on the
primary partition’s console.
primary console
The console terminal connected to the primary partition. The only active
console terminal when partitions are disabled.
secondary console
The console terminal connected to a secondary partition. Only active when
partitions are enabled.
power OFF/ENABLE switch
The four position switch located on the AlphaServer GS140 control panel.
The four positions perform the following functions:
• OFF – System power (all partitions) is off.
• SECURE – Power is applied to the system (all partitions). The primary
console’s ctrl/p halt function is disabled.
E–12 Administering Specific Hardware