The advantages of server clustering are many, but ignoring its cons in the light of its pros may not work in your favor. Make sure you understand what server clusters are all about before you cluster yours.
There is no doubt that server clustering offers benefits like high availability, high scalability, easy configuration, easy maintenance and management, and business continuity. That’s what you need, right? Right! But, are we ignoring the problems that we may come across. No, server clustering is far from being bad, but it is not simple. You should be capable of handling its complications before you decide to go for it.
For starters, a cluster needs several servers. So, you may need to invest in many more than you have. Now, the cost may not be a problem for you but since your infrastructure will increase, you will need to monitor and manage more hardware. If you cannot handle it, you may need to reconsider your decision.
One of the biggest problems with cluster servers is that you cannot cluster all types of servers. In fact, many applications are not supported in clustering. So, you must find out if the applications you want to be available all the time are at all supported by the cluster arrangement.
There is another factor that deters organizations from adopting clustering. Some cluster designs – the schemes that make the servers work together – are highly complicated, and thus, expensive.
Data security is yet another issue. Cluster designs don’t ensure the security of your data. You have to take measures of your own to ensure that, something not all organizations want to handle.
I would still say that server clustering is great. Just make sure you understand it well before getting into it.