The more physical memory your Virtual Private Server has, the more applications you shall be able to run concurrently. Some applications require a lot of RAM even if nothing else is running on the server, even though they might not require high Central processing unit speeds or lots of disk space. In case your web server runs out of memory, it will stop responding and the sites and the offline apps you host on it won't work adequately, as their software components shall not load since there will not be any free memory. In this light, we offer a RAM upgrade for our Virtual private server plans, therefore if you detect that your machine is close to the limit, you may make the most of this upgrade without upgrading the whole package and paying for resources that you won't use. That way, you can ensure the proper operation of your scripts and stop stressing that your site visitors shall see errors or will be unable to open your sites at all.