HP StorageWorks 8000 - NAS User Manual page 253

Glossary
Domain (TCP/IP)
An alphanumeric representation of an association of computers. (For example, hp.com. com is a
top level domain and hp is a second level domain.
Domain Name Service (DNS) Server
A server that translates domain names (such as hp.com) into IP addresses (such as 15.12.255.67).
If you have multiple DNS servers on your network, and one DNS server cannot translate a domain
name, it asks another one, and so on, until the IP address is found.
Dual In-line Memory Module (DIMM)
A module containing one or several random access memory (RAM) chips on a small circuit board
with pins that connect it to the computer motherboard.
Event log
A log of critical or informational events that occurred on the network.
Export
To make a portion of a file system on a remote computer accessible to a local (client) computer.
Failover
A backup operational mode in which the functions of the primary NAS server are assumed by the
secondary NAS server when the primary NAS server becomes unavailable through failure or
scheduled down time.
Failover Package
The smallest unit of failover within the cluster.
Failover package control log
A log file is maintained for each failover package in a cluster. The software and the failover
package monitor log messages that are specific to the failover package log files. (This feature is
available only on high-availability NAS devices.)
File Volume
The basic unit of logical storage for a file system on the NAS server.
Gateway
A combination of hardware and software that links two different networks using different
communications protocols so that information can be passed from one to the other. A gateway both
transfers information and converts it to a form compatible with the protocols used by the receiving
network.
Gateway address
The IP address of a network server or host that functions as a gateway to other networks through
communication lines or other network topologies.
HP StorageWorks NAS 8000 User's Guide 253