Okay, so I've gone back [1] and fixed the entry—it's a “Storage Area Network” and not “System Area Network.” Somebody (I think it was Mark [2]) told me what it actually meant, but since there's now a link [3] to the entry (who also thoughtfully corrected me) I might as well go back and fix it. I originally did a Google [4] search (I don't remember my exact query) but what I do remember coming up for “SAN” was “System Area Network.” It was never defined durring the presentation.
Sigh.
[2] http://www.conman.org/people/myg/
[3] http://www.fuzzygroup.net/computingtips/2002/11/14.html#a921