Each and every virtual or dedicated hosting server has its own Os and functions separately from the hosting machines of other customers. Updating the Operating system is often neglected, but doing that could have a wide range of advantages for your internet sites. The most essential reason to use the most recent version is that patches are usually released to fix security holes inside the Os code, so if you don't install the updates, you risk individuals with harmful intentions to exploit these holes and to access your content. OS updates are also released for improved performance of the system as a whole and for far better compatibility with the hardware available on the market, which could immediately impact the functionality of your internet sites. If the functionality and the security of your scripts is the reason to update them, you could also know that their most up-to-date versions require an updated Operating System so as to work properly, so keeping the OS up-to-date is always a wise idea.