How to: Choose A Server Rack
To the regular people, server racks seem to be the same as the typical racks. However, when you are planning to invest in server racks, it is essential to understand the distinct differences between the various data center racks. If you need a synopsis on servers and server racks, read our Beginners Guide to Server Racks.
Open Frame VS Closed Frame
Now when the chase starts for the rack, the first question that should come in your mind is whether or not you need an open framed rack or a closed frame rack (also referred to as server cabinet.) One of the distinctive features in the many rack types is whether or not the server rack is open framed or closed framed. The open frame is, as the name implies, open. Open frame racks come in both 2-post and 4-post options. You can read more about the differences between 2 post and four-post racks here
Open Frame Rack:
Pros
- Cost-Effective- usually, open frame racks cost much lesser than that of closed frames.
- Air Flow- if maximum airflow is the primary method for cooling in your data center or server room then, open-framed, is the best choice as it gives constant access of ambient air flowing through your equipment.
- Accessibility- again, being open means more convenient access to the equipment inside.
Don't use plagiarised sources.Get your custom essay just from $11/page
Cons
- Security- being open-framed, it has a high risk of a security breach as all your equipment is exposed. Not only that, buttons or wires can tangle, unconsciously get pulled or pushed if somebody has to clean them
- Dirt and Dust- dust is not conducive to the high-heat and high-functioning operation of server equipment. Having an open frame option will not protect your gear from this type of debris
- Organization- if you value order and organization, the closed frame option might be a better fit for you as an open frame option will have everything out in public that includes cables, shelves, rails, etc.
Closed Frame Rack:
Pros
- Security- The closed frame option allows locking up for your equipment, prohibiting them from unauthorized tampering and reducing accidental device damage or use.
- Organization:- All organizations have a risk of someone accidentally tripping over the wires, pulling them over. It may lead to an accident. However, this offers the facility of storing the cables and other equipment inside the rack. As a result, the frame looks like a neatly arranged box.
- Airflow flexibility: Hear sensitive pieces of equipment may be isolated from the rest by placing them within the closest frame. The good news is that closed racks have specially designed cooling equipment and fans. So, we can control where the air flows from it.
- Cost– typically, closed frame racks cost more than that of open frame racks because for the additional parts or materials that are, used to build it.
- Accessibility– the process for fixing up or maintaining equipment is difficult due to the blocked nature of a closed frame rack. If you choose to use this type of boot,sliding rails and shelves for servers and other equipment is highly recommended.
- Weight– with the additional materials, comes extra weight.
Size and Capacity
There is hardly any difference fundamentally, except that racks are open and cabinets come close. The key points of focus should be the dimensions and the volume when you are choosing your server racks. Server racks are typically measured in units categorized as “U” space. A “Rack Unit” or Rack “U” is an EIA standard allowance unit for measuring rack-mount equipment. One “Rack Unit” is equal to 1.75″ in height. The rack height is significant for how much material that can load inside, as well as how much power can be transmitted to equipment in the server storage device.
Group manager Mike Kendall, of options and infrastructure for industry-standard servers and software at Hewlett-Packard, told the news source the 19″ rack is widely considered a standard size for equipment storage. There are various types of frames available in the market, but the most frequent type you see in data centers is the 42U-high 600mm-wide rack, which is anywhere from 1,000 to 1,100 mm deep. These all support mounting of standard 19″ IT products. Another frequent type of frame you’ll find in a data center is a 36U rack, but the data centers widely use 42U-high, according to Mike Kendall, which was told to a Data Center Journal.
However, when you need to store equipment at more significant heights, much of the companies station bigger server racks than that of a 19″ frame with a 42U height, which is commonly used.
There are instances where smaller racks are advantageous for the organizations that have space issues between the server rack and the roof. Sales of server racks can be humongous as most of the companies are venturing into building data center facilities. With the survey conducted by RealPoints, revenues are generating more from IT systems that are censorious, bringing in more funding for the data centers who are outsourcing services for everything from colocation to disaster recovery.
Investor or an owner can cash in more fortune by using taller racks as it accredits to smaller data center area being used. Check out our projections for the demand for taller data center racks in the coming years.