The first thing that springs to mind if anyone hears the word virtualisation in connection with IT is server virtualisation. The virtualisation of servers has some clear advantages for companies. If you use the right tools you can avoid some pitfalls and obstacles at the beginning. It is not just servers that can be virtualised; clients and applications too!
Although a virtual machine can be set with just a few mouse clicks, the devil is in the details – T&N has years of experience and helps you along.
Server virtualisation has proven itself in practice and become established across the board. Anyone who jumps on the bandwagon now has the advantage that they can profit from others’ experience. Medium-sized businesses in particular are lagging behind: only around one fifth of all SMEs actually use server virtualisation.
Even though it has a number of advantages. One of them is the greater flexibility: it is easier to absorb demand surges if the users can be assigned to resources as necessary. What’s more, physical servers generally have only a low capacity utilisation (approx. 20 percent). The remaining capacities are not used. A capacity utilisation of up to 80 percent is possible with virtual servers. This saves companies money that would otherwise be spent on hardware, cooling, installation space and energy. In addition, correctly configured virtual servers offer a higher system stability compared to a conventional architecture.
Any virtualisation project in a company should begin with an extensive inventory of the existing IT environment and server infrastructure. The capacities and workloads have to be calculated in this case. What is important here is to calculate the capacity utilisation of the old servers and then set priorities. Some servers and workloads can be virtualised with no problems, others require special preparations. Furthermore, the requirements on the infrastructure have to be determined and the question asked as to whether a complete new installation is sensible and how the hosts should be designed.