If you use a VPS for online and offline programs, you may come across a scenario where they do not work correctly due to insufficient physical memory. This may take place if you try to run an app which requires additional RAM than the amount your package deal includes, or if you have too many applications and some of them consume all of the memory, leaving no free RAM for the others. Even in the event that you get a powerful package, this could happen if you include more apps on the hosting server at some point, and since it's possible that you shall need simply more physical memory, but not higher CPU speeds or more disk space, we provide a RAM upgrade which you could use without changing your whole plan. This way, you could pay only for the system resources which you really need and you'll be able to avoid errors on your sites caused by insufficient memory and the inability of the Virtual Private Server to load the programs.