ClearPath IX Systems Installation and Configuration Guide

Glossary
PDB
PDC
See partition databank.
See primary domain controller.
Peripheral Component Interconnect (PCI)
Local bus for personal computers that provides a high-speed data path between the
processor and peripheral devices.
PERL
Abbreviation for Practical Extraction and Report Language. A scripting language that
makes it easy to perform string-manipulation and parsing tasks. Common gateway
interface (CGI) scripts are often written in PERL.
physical disk resource
SCSI-attached disk for containing shared folders or storage, which is supported as a cluster
resource in an MSCS cluster.
PING
POST
See Packet Internet Groper.
Acronym for power-on self-test.
possible owners
A list that specifies which nodes in the cluster are capable of running that resource. By
default, both nodes appear as possible owners, so the resource can run on either node. In
most cases, it is appropriate to use this default setting. If you want the resource to be able
to fail over, both nodes must be designated as possible owners.
preinstalled
Installed on the computer at the factory. Software that is preinstalled must first have been
preloaded. It must be configured at the site, but it does not have to be either loaded or
installed.
preloaded
Copied to the hard drive of the computer at the factory. The software must be installed at
the site but does not have to be copied from the installation CD-ROM.
primary domain controller (PDC)
The computer running Windows NT server that directly receives and tracks changes to the
directory database in a Windows NT domain. Both primary and backup domain controllers
can authenticate user logons. A backup domain controller can be promoted to function as
the PDC. See also backup domain controller (BDC) and directory database.
private network
A TCP/IP network that supports only node-to-node communication within an enterprise
and does not require access to hosts in other enterprises or to the Internet at large.
Typically, the IP addresses assigned to hosts in such a network would be allocated from
blocks of IP addresses reserved for private networks by the Internet Assigned Numbers
Authority (IANA). See also public network.
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