Server Rack Q & A

What is a 19-inch Server Cabinet?

A 19-inch server cabinet is a standardized size frame or enclosure for mounting equipment. Each piece of equipment has a front panel that is 19 inches wide. To determine if your rack is a 19″ rack, measure the hole to hole spacing.

What are the types of server cabinets or racks available?

The most common types are:

• Server cabinets or racks 
• Open Frame racks - 4post racks 
• Relay racks - 2Post racks 
• Portable server cabinets 
• Wall Mount racks

What is a Rack Unit (U or RU)?

The Rack Unit is a unit of measurement used for defining the vertical space available in a server cabinet. A 'U' equals 1.75 inches or4.45cm. Rack-mountable equipment is usually designed to occupy an integer number of U.

What are some common or standard server cabinet heights?

Server cabinets come in a wide variety of heights anywhere from 1U to 50U and above. To see the range of cabinet enclosure sizes Gaw Technology offers, please click here: Any customer defined sizes also available.

When are Four- post racks used?

Four-post racks allow for mounting rails to support equipment at the front and rear. These racks may be open in construction or enclosed by front and/or rear doors, side panels, or tops. Four-post racks can provide both robust support and security.

When are Two- post racks used?

Two-post racks provide just two vertical posts. Equipment can be mounted either via its front panel holes, or close to its center of gravity, depending on the design of the rack. Two-post racks are most often used for telecommunication installations.

What are the Applicable Standards for Server Cabinet design and manufacturing?

-The EIA-310

It is standardizing features like the Rack Unit, vertical & horizontal hole spacing, rack openings and front panel width for sever csbinets.

-IEC Standards

IEC 60297 (IEC 60297-3-100, -101, -102, -104, -105 and IEC 60297-5) standardize the dimensions and the mechanical structure of the 19 inch server cabinet.

What is the significance of the Server Cabinet Depth?

Server cabinet depth is important not only because it has to allow room for the depth of the particular equipment to be rack-mounted (deep servers vs. routers or switches), but also it has to allow sufficient room for cables as well as airflow.

What server cabinet options for front and rear doors are available?

Front as well as Rear doors are available in many different materials, sizes and with various ventilation options. Locking systems are also available on most doors. Choosing a ventilated front and rear door is key in air circulation by creating a front to back flow pattern.

What Side Panel options are available for server cabinets?

The typical types of server cabinet side panels are: solid removable, solid fixed and louvered removable and fixed.

What is the most economical Server cabinet cooling technique?

Our approach to efficient cooling of datacenter server cabinets begins with a sealed separation between the cold isle in front of the equipment row and the hot isle in the back of the equipment. The sealing between hot and cold is done at the front rail level of the server cabinet. We implemented this solution, for instance, for a wide variety of servers and Cisco routers: 2821, 7613, 3560E, 3845, 2911, 6509E, 4507R, 4510R, 4510E, 4900M.

Since the router is designed to intake cold air from the side, which is now left by our separation in the hot isle, we needed to create a duct that would connect the router's intake to the cold isle in front of the cabinet. We accomplished the whole task by designing a cold air intake plenum mounted under the router, and connecting this plenum through a duct to the intake on the side of the router.

Enhanced, Well Designed and Economical Solution to Network Organization and Security

The custom server cabinets provide an enhanced, well designed and economical solution to network organization and security. Over the years we configured and built server cabinets for many customers, we have accumulated a high degree of customer loyalty and built a solid reputation based on two principles: excellent service and very reasonable prices.

Our wide range of standard cabinet enclosures, and the large assortment of sizes and options, can accommodate the greatest diversity of hardware manufacturers. Ventilation, cable management and modularity make it easy to work with.

We offer complete systems to hold and protect every element of your network... safely and economically. Please see below our standard offer and contact us to Request a Quote for custom products, or custom configurations and accessories.

Standard Dimensions & Features for Cabinets, Racks and Enclosures

Dimensions / Definitions

A: External height 
B: Internal usable height 
C: External width 
D: Internal usable width 
F: Distance between mounting holes 
G: Chassis clearance 
H: Usable space 
I: External depth 
H.P.O. Horizontal panel opening. The overall width of the cabinet is the H.P.O. plus 4 inches. 
V.P.O. Vertical panel opening. The overall height of the cabinet is the V.P.O. plus 6 inches. DEPTH The overall depth is the same as the dimension. When ordering cabinets, please choose from the size configurations below or provide us with your custom configuration.


Features 
Our cabinets come with (2) pair of adjustable Tapped Mounting Angles. (Also known as Mounting Rails). POWER Are power strips required? The 70" V.P.O. cabinet uses a 70" power strip (11 receptacles, 6' cord). The 77" V.P.O. cabinet uses a 77" power strip (12 receptacles, 6' cord). Also available is a 46" power strip (10 receptacles, 6' cord). The 46" power strip is more economical and is recommended when the customer requires (2) strips per cabinet. All standard power strips are 15 amps, 120 volts. If customer requires a 20 amp Power Strip, these are available in 70" length. They contain 12 receptacles with a 6' cord. If 20 amp is required, the customer may also require a Twist Lock Plug. At times, customer may require twist lock plugs on the 15 amp power strips. 

FANS 
Our standard is the Rotron Caravel Fan. This is rated at 560 CFM (cubic foot/minute). There are other fans available but these must be adapted to fit the cabinet. The Caravel Fan is 10" in diameter and 3 1/2" deep. When it is mounted in the cabinet, it protrudes 1/2" into the usable cabinet space. It can also be mounted on the rear door. 

PLEXIGLASS DOORS 
The cabinets are manufactured to accept a plexiglass door. The door is manufactured symmetrically and can be right or left hand hinged. If the cabinet is ordered with a plexiglass door and the customer wants to change the door from right to left hinged, they can do so by removing the door, turning it 180 degrees and reattaching it to the cabinet. There is no drilling required. 

REAR DOORS 
The rear doors can be louvered or slotted, with fan pattern. The slotted rear door is preferable when the customer may want to mount the fan on the rear door. 

TOP PANEL 
The top panel is usually supplied with a slotted fan pattern. This is so the fan can be mounted in the top panel without any problems. Some customers require louvered or solid tops. Bear in mind, if the customer wants a louvered top, they will not be able to mount the fan in the top panel. 

COLOR 
The cabinets are available in IBM, white, IBM blue, black, light, medium and dark gray as well as any FED-STD-595 color. If they have a special color they would like to match, they can have this by giving us a color chip to match. 

CASTERS AND LEVELERS 
Our cabinet is manufactured to receive casters and levelers without the need for any special hardware or drilling. 

SHELVES 
Shelves come in various styles. Flat Shelves mount to the two (2) pair of tapped angles that are standard in our cabinets. Cantilevered Shelves need only one pair of tapped angles in order to be mounted. The standard cantilevered shelf takes up 7" of panel space. There are, however, other cantilever shelves that take up less panel space, i.e. 3 1/2". We also manufacture Center mount Cantilever Shelves. These are used with open relay racks. 

LOCKS 
All front and rear doors are supplied with locks, unless the customer does not want locks. 

SIDE PANELS 
Side panels can be supplied if needed. Our side panels are actually side doors that open and can be removed if necessary, without tools. They are lockable from the inside and require a Phillips head screwdriver to lock. This helps qualify for U/L requirements. 

PULL OUT SHELVES 
These are shelves that enable the customer to mount his or her keyboard or other equipment that needs to be pulled from the cabinet for use or service. These mount in the same manner as our standard flat shelf.

Please call us with your specific server cabinet requirements.