Very few people understand the standards behind
The main standard that businesses use today is the small form-factor pluggable (or SFP) module. These standards basically interface a communication tool onto the motherboard of a device, much like a USB port for a regular computer. The fitted module changes what kind of connection one can use, but it supports both standard wires and fiber optic technologies. The advantage that these interfaces provide is large because they can be upgraded or repurposed easily based on what the current need of the owner is. Evolution as time passes is much easier because of these abilities, and it also can make an individual system extremely diverse.
With rising data rates, the standard had to be modified lately. SFP+ was then designed to support up to 10 gigabits of data per hookup. The board the SFP+ connection is on does more processing to support a wider and growing variety of modules that are put in place today and in the future. At first, this approach was looked at as something that would restrict its capabilities, but the processing on the board can be upgraded while still supporting older modules. The Cisco brand SFP modules do less than they did previously, and as a result, they are less expensive to purchase and change out when needed.
Even though one may know how these work now, many still have not a clue why there is a significantly different form when compared with what is found in most homes. The primary difference is having a communication standard that can be fit into an extremely small space while having the ability to be replaced in the future. The best way to illustrate this is having a PCI card within a computer that works as a host for SFP modules. Considering the fact that these boards are interchangeable, they can be replaced as well so the entire system does not need to be replaced. It can cost a lot to replace a server, and with this technique, Cisco GLC-T modules can be used today while their faster versions can be used tomorrow. Keeping the systems smaller is important because space is simply restricted, and a data center that routes an enormous chunk of the Internet to its various destinations does not have access to unlimited space.