Greetings:
Overselling is advertising and promoting something you currently do not have on hand.
i.e. You have a 40 GB hard drive with 30 GB for actual use. Your primary plan has 1 GB of disk space, and you put 250 sites on the server.
250 GB if all used even though you only have 30 GB of free space on the server.
Overselling can work in areas where you can readily, easily, and financially acquire the said resources in time to deliver them upon demand.
For example, let’s state your plans offer 10 GB of bandwidth with the same 250 sites on the server. That’s 2,500 MB of bandwidth.
Let’s say your provider includes 1,000 MB of bandwidth…. But any overages are automatically provided and charged to your account.
Presuming your pricing incorporates paying for the additional 1,500 MB of bandwidth, you are covered.
Lastly, the one area to keep in mind if you do play (and it is playing to a degree) with overselling, the reliability and performance of your server(s) can be dramatically impacted for the worse by treating them like sardine cans.
So even if you think you have the math down perfectly in terms of quantity and finances, the actually deliver may cause problems for your clients on said boxes.
Thank you.
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