Each and every virtual or dedicated server has its own Os and works independently from the hosting servers of other customers. Updating the Operating system is frequently neglected, but doing that might have a wide range of advantages for your sites. The most important reason to employ the newest version is that patches are usually released to deal with security holes within the Os code, so if you don't install the updates, you risk individuals with destructive intentions to take advantage of these holes and to gain access to your content. OS updates are also released for much better efficiency of the system as a whole and for better compatibility with the hardware available on the market, which can immediately impact the functionality of your sites. If the performance and the security of your scripts is the reason to update them, you might also find out that their most recent versions require an updated Os in order to function properly, so keeping the Operating system up-to-date is always a good idea.