NonStop Systems Introduction

Glossary
NonStop Systems Introduction—527825-001
Glossary-4
Enterprise Application Integration (EAI)
Enterprise Application Integration (EAI). Technology employed by a ZLE framework to
transmit information between business applications and the ZLE data store.
enterprise bean. A software component that implements a business task or business entity
and resides in an EJB container.
Enterprise JavaBeans (EJB). A standard component model for a Java server-side
framework for application servers. These servers provide services that include
transactions, security, and naming.
Expand. An HP communications software product used to connect NonStop servers in a
network. The Expand product extends the concept of fault-tolerant operation to
networks of geographically distributed NonStop servers.
expandability. See scalability.
fabric. See ServerNet fabric.
fault tolerance. The ability of a computer system to continue processing despite the failure
of any single software or hardware component within the system.
file recovery. A database recovery procedure in which the after-images of all committed
transactions are reapplied to the archive copy of the database. The database is
returned to the consistent state it was in just prior to failure.
file system. (1) In the Guardian environment, the application programming interface (API)
for communication between a process and a file. A file can be a disk file, a device
other than a disk, or another process. (2) In the Open System Services environment, a
collection of files and file attributes. A file system provides the namespace for the file
serial numbers that uniquely identify its files.
graphical user interface (GUI). A type of screen interface that typically includes pull-down
menus, icons, dialog boxes, and online help.
Guardian environment. An environment available for interactive or programmatic use with
the NonStop Kernel. The Guardian environment consists of an application
programming interface (API), tools, and utilities.
GUI. See graphical user interface (GUI).
heterogeneous network. A network consisting of components following different protocols
and often manufactured by different vendors. For example, a heterogeneous network
consists of computers that have different application programming interfaces (APIs)
and different protocols.
homogeneous network. A network consisting of components following the same protocol
and manufactured by the same vendor.