Why are servers being virtualized

The greatest advantages of server virtualization

Hartmut Wiehr

Many companies still rely exclusively on physically real servers. But the virtualization of servers is advancing slowly. We show the advantages of virtualized servers.

EnlargeWe present the advantages of server virtualization point by point.

Consolidation, cost reduction, automation or the easy relocation of complete applications from one physical location to another: There are many assumptions and hypotheses surrounding server virtualization, although this technology has been available on the market for x86 servers for about ten years. But it is still considered something "new".

Many companies continue to hold back with the implementation or at best experiment with "lower" applications. For business-critical applications it is still better to reserve your own physical server - exceptions confirm the rule.

VMware and other manufacturers are already talking about a second or third phase that will come after the server virtualization has been completed. Before it really comes to that and users rush into new investments, it seems appropriate to briefly recapitulate the advantages achieved so far.

1. Save energy

Maybe it's just a few drops in the ocean, but at least: Fewer physical servers in the data center mean less electricity during operation and less cooling. We don't talk so much about "Green IT" anymore, but setting up virtual machines (VMs) is a factual contribution to a better carbon footprint and a "greener" environment. You don't have to be a fanatical environmental fighter who reduces all human happiness to dealing with nature, a cool head who can count is enough.