| Lesson 2 || Hardware types and functions |
| Objective || Describe the three hardware categories required for planning a Web site. |
Hardware Types and Functions
The success or failure of a Web site depends on numerous factors, including the ability of the site's hardware to meet the needs of the site and its users. In most cases, a Web site development team is not directly involved in the selection of hardware; generally the client has already done so. However, whenever possible, the Web team (particularly the Technical team) needs to understand any potential limitations or restrictions that the hardware may impose on the site's functionality.
Hardware types and functions
Hardware needs can be divided into three categories based on their type and function: client, server, and connectivity/security needs. In addition, a network should include a hardware device that ensures uninterrupted power.
The typical client hardware consists of a desktop computer, a network interface card (NIC), and a modem or other client-side connectivity device. A desktop computer usually consists of a CPU, hard drive, and monitor. It runs programs as well as other software used to request information from the server. Client hardware may also include Internet-enabled devices such as Palm Pilots or other hand-held devices.
A server is typically a remote device (CPU, hard drive, and various programs) shared by many users. A server may be a machine that stores a particular resource, such as a database or Web pages, or a machine that performs specific functions, such as forwarding and receiving email. You will learn about the different kinds of servers in the next lesson.
Connectivity hardware allows a program or device to link with other programs and devices. Security hardware ensures that data stored in a computer cannot be accessed by unauthorized users. You will learn about the different types of connectivity and security devices later in this module.
Uninterrupted Power Supply (UPS)
An uninterrupted power supply (UPS) is any hardware device ensuring that electrical power continues to be available to computers and other network devices during a power outage or
other interruption in power. UPS devices include battery systems, internal combustion motors (or engines) that run AC generators, and rotary devices that use a large flywheel
to offer power during brief outages.
The following SlideShow illustrates a step-by-step process of integrating hardware into a network design plan:
Customer Experience Strategy