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370
Networking Fundamentals
The following words and terms will become important pieces of your
networking vocabulary. Be sure you can defi ne them.
ACPI Component Architecture
(ACPICA)
Automatic Confi guration and Power
Interface (ACPI)
backplane
blade server
Direct Memory Access (DMA) channel
disk mirroring
disk striping
duplexing
error correction
fabric switch
fault tolerance
Fibre Channel
fi rmware
hot swapping
hot-swap technology
Input/Output (I/O) port
Internet Small Computer Systems
Interface (iSCSI)
interrupt request (IRQ)
logical unit number (LUN)
memory address assignment
Network Address Authority (NAA)
network attached storage (NAS)
parallel processing
power-on self-test (POST)
Redundant Array of Independent Disks
(RAID)
serial attached SCSI (SAS)
Small Computer Systems Interface
(SCSI)
storage area network (SAN)
thin client
thin client server
thin server
Key
Words and Terms
A complete understanding of server hardware can take a great deal of study.
This chapter provides an overview of the server and identifi es different server
types and their roles. You will be introduced to some of the hardware that makes
the server unique from the ordinary PC, and you will learn about RAID and
other storage systems.
Server Types and Services
Servers provide a variety of services. Some of the services a server can
provide are authentication and security, Web, mail, and print. A server can be
called by many names. For example, it can be called an authentication and security
database server, Web server, mail server, and print server, Figure 9-1. A network may
have a single server that provides a variety of services, or it may have a group of
servers, each providing a specifi c service.
A small network usually has one server set up to handle many different
services. A large network usually has several servers, each providing a different
service or set of services. For example, a large corporation may use one server
to handle e-mail requests and Web hosting, another server to serve as a domain