An excellent book, well structured, good depth of content, well written, and the right length. I finished this book feeling that I have a much better understanding of data center Ethernet and Fibre Channel over Ethernet and the technologies that work in conjunction with them. Additionally, I feel the book contains the information I will need to reference on this technology in the future. Said another way, this book is not just an 'I/O Consolidation 101', but also a reference book I am likely to use again.
The simple but effective structure consists of Chapter 1: I/O Consolidation Summary, Chapter 2: Enabling Technologies, Chapter 3: FCoE, and Chapter 4: Case Studies. This quickly builds the readers knowledge and gives a depth of understanding that I found rather pleasing for only having to read 168 pages.
The format is very dense (not verbose), but with enough good examples to solidify concepts in the mind. I would ensure anyone reading this book has a solid understanding of TCP/IP networking to get the most from this book. This being said, I don't think you need a deep understanding in Fibre Channel as the authors adequately explain this technology.