In case you use a Virtual Private Server for online and offline applications, you could come across a case where they don't operate properly due to lack of physical memory. This may happen if you try to run a program which requires additional RAM than the amount your plan provides, 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 case you get a powerful plan, this may happen if you include more programs on the web server at some point, and since it is possible that you will need only more physical memory, but not higher CPU speeds or more disk space, we provide a RAM upgrade that you'll be able to use without changing your whole plan. That way, you could pay only for the system resources which you really need and you can avoid errors on your Internet sites caused by deficiency of memory and the inability of the VPS to load the programs.