Data centers are characterized by dense rack deployment which requires intra- and inter-row high-speed communication. In general, the bandwidth need of data centers continuously increases. The required data rate between certain racks is subject to variations within hours, days and weeks. Additional wireless links are an attractive solution to introduce some flexible routing for adjustments to the actual traffic in a data center. Traffic bursts can be handled this way and the installation of 100 Gbit/s links at 300 GHz will outperform alternatives at 60 GHz by a factor of 10 for example. Compared with mobile applications this scenario is rather static. Therefore, the possible line-of-sight paths can be evaluated in advance. Nevertheless, beam steering allows adjusting the links whenever needed.