Rack servers, also known as rackmount servers, are low profile servers that mount to a frame or enclosure called a rack. Racks incorporate cable management features and can also include cooling and power for multiple pieces of equipment. Rackmount servers range in size from 1U to 7U. A "U" is equal to 1.75 inches and refers to how many units the server takes up in a rack.

A computer rack server is a good choice if you already have a rack, or plan to purchase additional rack mountable equipment. In addition to the rack, you may also need to buy rack server accessories.

Like any server, rack servers must meet the present and future demands of your network and business. Be sure to:

1. Choose the right configuration for your computer rack server

2. Get the level of support you need

3. Buy rack server equipment and accessories that can grow with your business

Action Steps
The best contacts and resources to help you get it done

Choose the operating system and hardware configuration of the network rackmount server

Rack servers must be configured with the necessary processing power, memory and hard drive space. A lower-end server can handle simple tasks like file sharing and network management. Application, web and database servers require more processing power, memory, and hard drive space. If you want the operating system pre-installed, you'll need to choose which one you want.

I recommend: If you'll be using the server to run an application, ask the application developer to recommend an operating system and to provide specs including recommended processor, memory and disk space. For a simple file server, Windows Server is probably easier for non-technical staff to manage than Unix based systems. Most rack mount server manufacturers, such as Dell and HP, provide guidance in choosing the best hardware configuration for your needs.

Determine what type of support and management you need

If you don't have an IT team or service provider, make sure you get a server that is pre-configured and includes comprehensive support and remote management.

I recommend: Budget for extra support services along with the cost of the server. If your network is growing, now might be the time to consider hiring a local service provider, or getting remote support from an enterprise. IBM offers various hardware, software, and managed support options. ServPath and other companies provide on-site and remote management and support.

Buy the server

Once you've decided on a configuration, compare prices from various rack server providers and purchase the rack server.

I recommend: If you need support, buy from a company like IBM or HP that has longevity and a great reputation. If your IT guy can fix anything, consider purchasing a used server or buying cheap from a lesser-known company.

Purchase a server rack and accessories

You can buy a rack for servers from the server manufacturer or other sources. Racks generally are sized from 14U to 48U. Some racks can be mounted to a wall or fit under a desk.

I recommend: If you plan to add other servers, rackmount network gear, or other equipment, buy a server rack that can hold it all. If your rack is going to be located in a dusty environment, invest in a server cabinet instead of just an open rack. Add extras to keep things neat, like monitors or keyboard monitor combination drawers. Make sure doors, shelves, and sides are well ventilated. Make sure the cabinet has a cooling fan.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  The fans on rack servers can be extremely noisy. Locate the server in an area that is separate from employees, or upgrade to a noise-reducing chassis.
• •  Get a little more disk space than you think you'll need. It's easier to pay a little more now than to upgrade later.
• •  Make sure your server is safe and secure by using a firewall, virus protection, and data backup.