If your business has only a single desktop computer, you have no need for a local area network (LAN). However, if you have an office with several desktop PCs and a server, a LAN is essential for your IT system to run efficiently.A LAN connects all your IT hardware together and permits the sharing of data and resources such as printers and servers. It is much more effective to use a LAN than to share data across a number of desktop PCs using disks or similar methods. See our guide on how to get the most from your network.
LANs consist of wiring and some specialised components. The wiring should be installed by qualified suppliers to a recognised standard. This will provide you with a number of outlets into which devices such as PCs can be connected.
The special LAN components are called hubs or switches. These provide the central point where data is exchanged between devices. The term 'hub' refers to older technology which, although cheaper, does not offer the same performance as a switch. You should select a switch with enough 'ports' or sockets to support all the connected devices in your office with a few spare for expansion. Switches should comply with networking standards, and you should seek expert advice if you are unsure what is needed for your business.
Your switches should be located in a secure area, eg next to your servers. You should restrict access to your switches, since interference could cause many of your desktop PCs to lose their network connections.An alternative to a wired network is a wireless LAN. If at all possible, you should use a wired LAN for the main part of your office network, and use wireless technology for workers who need mobility around the building. See our guide on wireless technology
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