SAME-- config effects

So, how does the SAME idea affect config parms, like LRUS, that used to depend on # of spindles and/or chunks? For instance we will have a single 72GB rootdbs, comprised of a single chunk. How do I count these things, now? 'format' sees a single disk, but I'm pretty sure I'll be in trouble if I follow the documentation literally. Same with chunks-- only one, but.... How should I see the world, now? DG