Exploring DRD Rehosting in HP-UX 11i v2 and 11i v3 (July 2010)
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Glossary
Term Definition
booted system
environment
The system environment that is currently running, also known as the
current,
active,
or
running system environment.
CLI
Command line user interface
clone
• (noun) clone – a system image clone
• (verb) clone – to clone a system image
cloned system
image
A copy of the critical file systems from the system image of a booted system
environment, produced by the drd clone command.
A cloned system image may be inactive, or the cloned system image may be
booted, in which case the system activities are started and the clone becomes
the system image in the booted system environment. When a particular
system image is booted, all other system images are inactive.
A system administrator may modify a cloned system image by installing
software on it using the “drd runcmd” command.
DRD
Dynamic Root Disk. The collection of utilities that manages creation,
modification, and booting of system images.
EFI
Extensible Firmware Interface is the firmware interface for Itanium®-based
systems.
Also the name of the first partition on a HP-UX boot disk.
inactive system
image
A system image that is not the booted system environment. This system image
can be modified while the booted system environment remains in production.
LVM
Logical Volume Manager. The logical volume manager (LVM), a subsystem
that manages disk space, is supplied at no charge with HP-UX.
OE
Operating Environment
original system
environment
A booted system environment whose system image is cloned to create another
system image. Each system image has exactly one original system
environment (that is, the booted system environment at the time the drd
clone command was issued).
root file system
The file system that is mounted at /.
system
environment
The combination of the system image and the system activities that comprise a
running installation of HP-UX.
system image
The filesystems and their contents that comprise an installation of HP-UX,
residing on disk, and therefore persisting across reboots.