Each and every virtual or dedicated hosting server has its own Os and functions independently from the servers of other clients. Updating the OS is usually ignored, but doing that could have lots of advantages for your websites. The most important reason to employ the most up-to-date version is that patches are usually released to deal with security holes within the Operating System code, so if you don't install the updates, you risk individuals with destructive intentions to use these holes and to get access to your content. OS updates are also released for much better efficiency of the system overall and for better compatibility with the hardware available on the market, which can instantly influence the efficiency of your internet sites. If the efficiency and the security of your scripts is the reason to update them, you may also discover that their most up-to-date versions require an updated Operating System so as to function effectively, consequently keeping the Operating system up-to-date is always recommended.