6760 ServerNet/DA Manual

Glossary
6760 ServerNet/DA Manual—424879-003
Glossary-23
DISKGEN
DISKGEN. A system generation option that invokes the DISKGEN program to copy directly
to disk those files necessary to generate a HP NonStop™ Kernel operating system.
DISKGEN can be used instead of a system image tape (SIT).
DISK object type. The Subsystem Control Facility (SCF) object type for all disk devices
attached to your system.
disk volume. See volume.
distributed system. A system that consists of a group of connected, cooperating
computers.
Distributed Systems Management (DSM). A set of tools used to manage HP NonStop™
S-series systems and Expand networks.
Distributed Systems Management/Software Configuration Manager (DSM/SCM). A
graphical user interface (GUI)-based program that installs new software and creates a
new HP NonStop™ Kernel operating system. DSM/SCM creates a new software
revision and activates the new software on the target system.
distribution subvolume (DSV). A subvolume containing program files for a particular
software product along with the software release version update (RVU) document
(softdoc) file for that product. The format for a DSV name is Y
nnnnrrr or Rnnnnrrr,
where
nnnn is the software product number and rrr is the base version identifier
(such as D20) or software product revision (SPR) identifier (such as AAB).
DLC. See data link control (DLC).
DNS. See Domain Name System (DNS).
DNS server. A server that resolves hostnames to Internet protocol (IP) address mapping
queries. These queries originate from either client computers, which are known as
resolvers, or other Domain Name System (DNS)
servers, which accounts for the
distributed nature of DNS. See also Network Information Service (NIS)
.
domain. (1) A set of objects over which control or ownership is maintained. Types of
domains include power domains and service processor (SP) domains. (2) In the
Internet, a part of the naming hierarchy. Syntactically, a domain name consists of a
sequence of names (labels) separated by periods (dots).
Domain Name System (DNS). A system that defines a hierarchical, yet distributed,
database of information about hosts on a network. The network administrator
configures the DNS with a list of hostnames and Internet protocol (IP) addresses,
allowing users of workstations that are configured to query the DNS to specify remote
systems by hostnames rather than by IP addresses. DNS domains should not be
confused with Windows NT networking domains. See also DNS server
, Network
Information Service (NIS), and ping.