Each virtual or dedicated server has its own Operating System and functions separately from the hosting servers of other customers. Updating the Operating system is usually overlooked, but doing that may have a wide range of advantages for your internet sites. The most essential reason to use the latest version is that patches are frequently released to fix security holes within the Os code, so if you don't install the updates, you risk people with destructive intentions to take advantage of these holes and to gain access to your content. OS updates are also released for enhanced functionality of the system in general and for better compatibility with the hardware on the market, which can instantly impact the efficiency of your internet sites. If the efficiency and the security of your scripts is the reason to update them, you could also discover that their most up-to-date versions require an updated Operating System to be able to work effectively, so keeping the OS up-to-date is always wise.