Most webmasters started off using single domain hosting or shared web-hosting services. Shared web hosting means you share a server with dozens of other webmasters. Typically, shared web hosting plans allows you to have more than 1 domain per shared web hosting account with a predetermined hard disk space and bandwidth. The cost is usually pretty low. You only need to pay around 3-10 dollars per month.

Although it is cheap to host your website on single or shared web hosting accounts, there are many disadvantages you should be aware of.

By the nature of shared hosting, the server resources are shared among many websites, therefore it is very easy for resources such as CPU and memory to be used up quickly. Certain types of websites such as proxy sites are known to generate high CPU utilization, therefore if your website is on the same server, be advised there is a possibility of your website going down. Spam complaints against other sites on the same server will also affect your website. Any form of denial of service attack against someone else hosting can impact on the uptime of your website.

Also some web hosting companies over packed too many hosting accounts on one server causing the server to be slow and sluggish. The end result is your website is up but takes too long to load and display properly.

How can you do to avoid this issue?

Years ago, the only solution is to get a dedicated server. However, nowadays you can get a cheap virtual dedicated server for less than 30 dollars a month.

A cheap dedicated virtual server or VPS allows you to run your sites as if you own the server virtually. In reality, the dedicated server is spilt into multiple virtual dedicated servers. The main advantage is that each virtual dedicated server has control over it's own resources such as CPU, RAM etc. So each virtual dedicated server is totally isolated from other virtual servers and will not be affected if other webmasters bring their servers down.

Some web-hosting providers also have unmetered bandwidth, which is a plus.

So Are There Any Disadvantages in having a virtual dedicated server?

There are not many major disadvantages except for cost. It will cost a little bit more on hosting. The other disadvantage is you need to be technically proficient in administering the server. However, some web-hosting providers also can provide managed virtual dedicated server. It means they will help you to manage the server. Examples are routine server maintenance, security patches etc.

With increased speed and reliability from using cheap virtual dedicated server, you will rest easy that your websites are always up while you are sleeping.