In case you use a VPS for online and offline apps, you may come across a case where they don't work correctly because of insufficient physical memory. This can happen if you try to run an application which requires more RAM than the amount your plan comes with, or if you have too many apps and some of them consume all the memory, leaving no free RAM for the others. Even if you get a powerful package, this can happen if you add more apps on the web server later on, and since it's possible that you will require only more physical memory, but not higher Central processing unit speeds or more disk space, we offer a RAM upgrade that you may use without changing your whole plan. This way, you can pay only for the resources that you really need and you shall be able to avoid errors on your sites caused by insufficient memory and the inability of the VPS to load the apps.