Each and every virtual or dedicated server has its own Os and functions independently from the hosting machines of other customers. Updating the Operating system is usually neglected, but doing that could have lots of benefits for your sites. The most essential reason to use the newest version is that patches are usually released to fix security holes inside the Os code, so if you do not install the updates, you risk individuals with harmful intentions to use these holes and to gain access to your content. Operating system updates are also released for improved performance of the system in general and for far better compatibility with the hardware on the market, which could directly affect the functionality of your internet sites. If the efficiency and the security of your scripts is the reason to update them, you might also know that their newest versions require an updated Operating System so as to work effectively, so keeping the Operating system up-to-date is always recommended.