NonStop Systems Introduction for H-Series RVUs

Glossary
NonStop Systems Introduction for H-Series RVUs—540083-001
Glossary-9
processor.
processor. A single central processing unit in a NonStop system or network of systems. A
single system can contain from 2 to 16 processors. In NS-series servers, a processor
consists of one or more processor elements from each NonStop Blade Element
executing a single instruction stream. A duplex processor has two processor elements
forming a logical processor. A triplex processor has three processor elements. The
terms “processor” and “logical processor” are synonymous.
processor element. In the NonStop Advanced Architecture, a single Itanium
microprocessor with its associated memory. A processor element is capable of
executing an individual instruction stream and I/O communication through fiber-optic
links.
program. A sequence of instructions that can be executed on a computer.
protocol. A set of rules governing the operation of communicating entities. Protocols define
the order in which messages are sent and how the recipient behaves on receipt of the
message. Examples of protocols are TCP/IP, SCSI, ATM, and IIOP.
real-time enterprise. An enterprise, or business, that can act quickly on new information to
gain a competitive advantage.
real-time applications. Applications, functions, or services that can directly access the real-
time data store, use integration technology to access other applications and data, and
update the real-time data store.
real-time hub. A virtual hub at the center of the ZLE framework that consists of one or more
NonStop servers hosting an SQL/MX relational database (the real-time data store) and
enterprise application integration (EAI) technologies.
real-time data store. The physical and logical center of the ZLE framework. It is essentially
a database front end for new and existing applications attached to the real-time hub.
The data store functions as a hot enterprise cache, state engine, real-time data
warehouse, and relational message store. As such, it delivers, at any given time, a
single, consolidated view of all pertinent data from all applications in the enterprise.
The real-time data store is implemented using an SQL/MX database.
RDF. See Remote Database Facility (RDF).
Remote Database Facility (RDF). A software utility that enables disaster tolerance for
production databases, monitors database updates audited by TMF on a source
system, and applies those updates to a copy of the database on a target system.
requester. A process or program that runs in the Guardian environment on a NonStop
system and requests services form a server process. See also client, server, and
requester-server model.
requester-server model. A model for application design that divides the tasks of data input,
data manipulation, and data output between two basic types of processes: requesters
and servers. A requester sends a request to a server. The server performs the request