One of the most controversial topics surrounding web hosting is the practice of overselling bandwidth, and rightfully so. The practice of overselling has enormous potential for disaster - ask any webmaster who has ever woken up to a cold, unforgiving "Bandwidth Exceeded" message where his or her site should be. The risk of such outages is all too real, and the cleanup effort for network bandwidth outages is a long and arduous process.
Unfortunately, it is a risk that every webmaster must take. The nature of the web hosting Business does not allow you to eliminate the risk, only to mitigate it to the best of your ability. In this article, we'll explore the relationship between overstated bandwidth claims and website downtime. As a professional webmaster, you have a responsibility to balance cost and risk when choosing a web hosting plan. This article aims to clarify the pros and cons of one of the most common risky practices so that you can make a more informed decision when choosing your web host.
Unlimited Bandwidth
As the web hosting market has grown more and more competitive over the years, hosting companies have increasingly begun to tout "unlimited bandwidth" or "unmetered bandwidth" as a major selling point of their hosting plans. These claims are generally seen as nothing more than a marketing ploy. After all, no web hosting company could truly offer you unlimited bandwidth, since the bandwidth of the hosting company, network, and even the Internet itself is physically limited.
Ok, let's be fair here. The limitations I'm talking about are almost incomprehensible and would never be reached by a single site. A hosting company could offer virtually unlimited bandwidth (or "unmetered bandwidth" or whatever phrase they choose to keep the lawyers at bay). This is the gray area between truth and falsehood upon which marketing claims feed.
The simple truth is that bandwidth costs money. It costs your web hosting company money, which in turn costs you money. The more megabytes of bandwidth your hosting company gives you for your dollar, the less profit they make. The only reason that a web host is able to make unlimited bandwidth incentives possible is because most websites use only a fraction of the bandwidth available to them. The more websites a hosting company hosts, the easier it is for them to make very accurate predictions about how much will actually be used. If those predictions tell them that over the course of any given month the large traffic spikes will be averaged out and still remain profitable, then they can safely offer unlimited bandwidth and remain profitable.
The practical upshot of this is twofold: Firstly, marketing claims are not necessarily outright falsehoods, but they're not to be implicitly trusted either. Secondly, if you are signed up under a "unmetered bandwidth" hosting plan and you consistently use enough bandwith to blow the curve, you can expect a phone call from your hosting company. These calls usually involve friendly sales people trained in the art of the upsell, and are almost invariably concluded with an invitation to read the fine print of your hosting contract.
Overselling
Unlimited bandwidth claims get a lot of press, but the real danger lurks in the practice of overselling bandwidth. Like the man behind the curtain, overselling is the cause of real probl
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