Cisco Cisco HDT Network Storage Hard Drive Trays Administrator's Guide

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Glossary of Storage-related Terms and Acronyms
Linksys Small Business NSS4000 and NSS6000 Series Network Storage System Administration Guide
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D
V
Virtualization: The creation of a virtual (rather than actual) version of something, 
such as an operating system, a server, a storage device or network resources. The 
Cisco NSS refers to virtualization as a way of aggregating storage between 
devices. Virtualized storage occurs when storage is exported to the network as a 
disk drive or an array and is then imported by a master NSS. The master NSS then 
uses the newly imported storage to create a single JBOD.
VLAN: Virtual Local Area Network (LAN). A logical group of user stations, servers, 
and other network devices that appear to be on the same LAN, regardless of their 
physical location. You can use the MAC addresses or IP addresses to interconnect 
the workstations on the LAN. You can access and control the switches directly 
from a console port or via the LAN using IP.
W
Well Known Ports: IANA assigns TCP and UDP port numbers to specific uses. The 
port numbers are divided into three ranges: the Well Known Ports, the Registered 
Ports, and the Dynamic and/or Private Ports.The Ports that are popular (well 
known) are those in the range 0 to 1023. 
WINS: Windows Internet Naming Service. This is part of the Microsoft Windows 
NT Server. It manages the association of workstation names and locations with 
Internet addresses. The user or an administrator does not have to be involved in 
each configuration change. 
X
XFS: A high-performance journaling filesystem created by Silicon Graphics for 
their IRIX operating system. XFS has been merged into the mainline Linux 2.4 and 
2.6 kernels, making it almost universally available on Linux systems. Installation 
programs for the SuSE, Gentoo, Mandriva, Slackware, Zenwalk, Fedora, Ubuntu 
and Debian Linux distributions all offer XFS as a choice of filesystem. FreeBSD 
gained read-only support for XFS in December 2005 and in June 2006 
experimental write support was introduced to FreeBSD-7.0-CURRENT.