The term “data center” is something many people are familiar
with. Data centers by nature tend to be
hungry for bandwidth and are demanding more throughput than ever before. It wasn't long ago that the vast majority of
network engineers couldn't even imagine filling a 10 GbE link. The tables have indeed turned with the
introduction of cloud computing and virtualization, and bandwidth has seen the
demand increased tenfold.
Providers are starting to make the switch over to 100 GbE on
their backbone connections to support the workloads that their customers are
demanding. In the data center itself,
most are seeing that 100 GbE and, in a lot of cases, even 40 GbE is overkill
for the workloads they are currently serving up.
So, looking at the various speeds available today and what
is coming in the very near future, you might be left wondering how come there
are not more options available. Today,
10 and 40 GbE speeds are available and widely used in the edge data
center. So, where does this 25 GbE come
in?
Let's take a look at how essentially 25 GbE is derived. Today's 100 GbE network devices utilize four
channels of 25 GbE each. The effects of
using just a single channel are multifold on device and environment
sizing. This will decrease the amount of
heat that the device will give off and in turn decrease the amount of power and
cooling required. This allows for a much
more cost-effective upgrade in the data center when 10 GbE is not enough and 40
GbE is way too much. Down the road, this
can be extremely beneficial when network operators realize that they need to
double or even triple their current speeds.
The IEEE standard for 25 GbE is not set to be recognized as
a standard until sometime in 2016. Its
arrival is being anxiously awaited.
Until that time, manufacturers will not be quick to develop products that
support those speeds as their profitability would be low. It’s all about the Benjamins!
Since the adoption of the 40 GbE and 100 GbE standards by
the IEEE just a few short years back, it has spawned focus groups to begin
development of 400 GbE and even Terabit Ethernet. Seeing how the edge network is rapidly
growing, the demand for these faster speeds will only continue to gain
momentum.
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