HP-UX System Administrator's Guide: Overview

Standalone Systems (One Single-Core Server, One Operating System
Instance)
The simplest case, a single 1P/1C server, running a single instance of HP-UX, is a
standalone system. It is a computer not connected to a network (or is the sole server
on a network).
Today, these are probably dedicated machines, perhaps running highly secure or highly
specialized applications. For whatever reason, these are systems in isolation. They are
either single user machines or if they support multiple users they require directly
connected terminals or modem connections.
By nature, these machines are limited in processing resources and therefore not very
flexible in configuration so most of the virtualization technologies are not available to
them. However, even these machines can benefit from the following virtualization
technologies:
• Integrity Virtual Machines
Integrity Virtual Machines allow you to share a common set of hardware resources
on an HP Integrity Server among multiple operating system instances. The
resources are shared on a temporal basis.
• Volume Management using either:
— The HP Logical Volume Manager (LVM)
— The VERITAS Volume Manager (VxVM)
• Persistent Device Special Files
Persistent device special files allow you to have multiple physical paths to mass
storage devices. Persistent device special files have virtualized hardware paths
(called LUN hardware paths) so that a single persistent device special file can
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