Loved this book. It's an easy, yet informative read. It makes a lot of common sense, and deals with things you might think are ordinary, but you've never sat down and analysed it so much.
It's a great help, for anyone estimating, and testing database hardware. It addresses servers, processors, memory, disk-arrays, bench-marking, processor topologies, operating systems, SQL Server Editions, installation and configuration, and more.
I follow Glen's blog, and find his expertise very usefull.