The more physical memory your Virtual Private Server has, the more apps you will be able to run simultaneously. Some programs require plenty of RAM even if nothing else is running on the hosting server, even though they might not demand high CPU speeds or plenty of disk space. In the event your hosting server runs out of memory, it will stop responding and the sites and the offline programs that you host on it shall not work effectively, 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, thus if you detect that your hosting server is close to the limit, you'll be able to take advantage of this upgrade without upgrading the whole package and paying for system resources that you won't use. That way, you can ensure the proper operation of your scripts and stop concerning that your site visitors will see errors or won't be able to open your sites at all.