In the event that you use a VPS for online and offline programs, you might come across a scenario where they don't work correctly as a result of lack of physical memory. This can occur if you try to run an application that requires more RAM than the amount your package deal comes with, or in the event that you have too many programs and some of them consume all the memory, leaving no free RAM for the others. Even in the event that you get a powerful plan, this can happen if you add more apps on the server at some point, and since it's possible that you shall need only more physical memory, but not higher CPU speeds or more disk space, our company offers a RAM upgrade which you could use without changing your whole plan. Thus, you could pay just for the system resources that you really need and you'll be able to avoid errors on your sites caused by a lack of memory and the inability of the VPS to load the programs.