If your business is growing so much, you may want to consider switching from shared business web hosting and opting for a dedicated server. This will usually be worth considering when your business is growing and doing extremely well because these servers can cost you a lot of money, usually around 100 dollars a month.
A dedicated server is perfect if you find that you want the whole server to yourself. This will mean that you can use the whole disk space and you will be able to have a number of different websites connected to it. You will also gain your own dedicated IP address.
This is not always worth the extra money however, because some companies actually use older servers. This will usually mean that a website runs just as slow as it would on a shared server. This can be extremely annoying to your customers and you could find that they go somewhere else because they cannot get what they need from your business.