HP-UX System Administrator's Guide: Overview HP-UX 11i v3 (B3921-90011, September 2010)

stale device
special file
A device special file no longer associated with a valid device. For example, a device file associated
with a device that has been removed from a server.
storage stack The various layers of hardware and software the comprise HP-UX based storage systems.
Layers in the storage stack include:
• Storage Devices (disks, disk arrays, DLT libraries, and so on)
• Drivers to access the storage devices
• Volume Managers (for example, LVM, and VxVM)
• Logical Volumes,
• File systems (for example, HFS, and VxFS)
Superdome 2
blade
On Superdome 2 systems: Superdome 2 blades contain processors, memory, I/O components,
and on-board LANs. Similar, though not identical, in concept to cell boards (see cell) in non
blade-based cellular systems, Superdome 2 blades can be combined to create electrically isolated
partitions known as nPartitions. Multiple nPartitions can sub-divide an entire system for more
efficient utilization of resources.
See also nPartitions.
Superdome 2
Onboard
Administrator
(OA)
On Superdome 2 systems: A firmware-based environment used for configuring and managing
the resources of the system. The Superdome 2 Onboard Administrator (OA) can be used to
configure partitions (nPartitions and vPars), control power to various entities within the system,
boot operating systems, and monitor the health of the system and its components. The
Superdome 2 OA also integrates with HP Systems Insight Manager and the HP System
Management Homepage. The Superdome 2 OA replaces the Management Processor (MP) used
on non blade-based cellular systems.
See also HP SIM, HP SMH.
system Used in this document in two ways:
1. A server or subset of a server (for example, a partition) running an
independent copy of HP-UX.
2. Another type of computer (for example, a PC)
system default
printer
If defined, the system default printer is the print destination that will be used as a print
destination if one is not otherwise specified. See lpadmin(1M) manpage (-d option) for details.
tunables See kernel tunables.
Utility Meter The software and hardware device that receives PPU utilization information from the PPU
software. The utility meter is initially installed and configured by an HP service representative.
virtual LUN ID
The final element in a LUN hardware path (0x3 in the following example):
64000/0xfa00/0x3
virtual machine Abstractions of real, physical machines. Multiple virtual machines can share a common set of
physical resources.
See also Integrity VM guest.
Virtual Partition A software partitioning of a server or nPartition where each virtual partition contains an instance
of an operating system. Though an nPartition can contain multiple virtual partitions, the inverse
is not true — a virtual partition cannot span nPartition boundaries.
See also nPartitions.
virtual root node In a virtualized path to a device (in the agile view), instead of a series of bus-nexus addresses
leading to the HBA, the path contains a virtual bus-nexus (with an address of 64000). This
virtual bus-nexus is called the “virtual root node”. An example of a LUN hardware path
(showing the virtual root node) is:
64000/0xfa00/0x3
Virtual Server
Environment
(VSE)
See HP Insight Dynamics–VSE.
virtualization Technologies for using your computing resources in ways not dependent on the physical
characteristics of those resources. For example, a logical volume can span multiple physical
disk devices.
116 Glossary