Some background: I'll be starting my PhD in computer science this fall and just noticed that my prospective advisor won one of the 2015 Alfred P. Sloan Research Fellowships.
Obviously the standard caveats apply: a good researcher can be a terrible advisor, and my success in a PhD and beyond will depend mostly on me.
But, even though it feels a bit petty: I know advisor reputation and network matters both during and after the PhD. Can I talk this as a positive sign for both, and how positive? More practically, how well might a Sloan fellowship track with making tenure? Having my primary advisor not make tenure would be dicey.