Avantages
You contact with an enormous quantity of technologies, and, while still studding are able to significant work, that matter to people lives (students and professors alike). You are able to research and learn about amazing and rare technologies (clusters, networks, remote management). Your opinion does count and you are able to innovate as much as you like. Cutting edge technologies or old, legacy technologies, what matters is do they do the work or is anything better.
Inconvénients
You are given the infrastructure and the possibility to learn about almost anything related to system administration, but most of the time, you are the one doing the research. Other colleagues will be studying for classes and working also, so there is little time to share knowledge. Don't get me wrong, everyone will help you if you ask, but there is not much time to just learn from colleagues. Also this is the "cheaper" scholarship available, so the pay is low. Finally, the logistic (tables, chairs, PC's, monitors) is always regarded as the least important thing.