Each and every virtual or dedicated hosting server has its own Os and functions independently from the hosting servers of other clients. Updating the OS is frequently ignored, but doing that might have lots of benefits for your websites. The most important reason to employ the most recent version is that patches are typically released to fix security holes within the Operating System 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 overall and for far better compatibility with the hardware available on the market, which could directly influence the performance of your websites. If the efficiency and the security of your scripts is the reason to update them, you may also find out that their newest versions require an updated Operating System so as to work properly, therefore keeping the OS up-to-date is always a good idea.