Here is where I am at in my exam prep right now...
I have read 2 vSphere 5 books(Scott Lowes book and the Official VCP5 Certification Guide)
I have built a lab with a Windows/SQL Express based vCenter Server, 2 ESXi 5 hosts, and a FreeNAS iSCSI SAN.
I have used the VCP5 Mock Exam and the Practice Exams provided with the Official VCP5 Certification Guide and routinely score well(mid 400's)
I have over 30 pages of hand-written notes.
I have experience with VMware going back to the GSX days, I use VSphere 4.x daily.
In spite of the fact that, by every indication, I was fully prepared for the exam I failed at my first attempt, not only failed but failed by 50 points. I have been in the IT industry for over a decade, I have taken numerous certification exams before(over a dozen) for other vendors and never failed a single one until my first attempt at the VCP-510 exam.
I need advice on how to approach passing the exam since what I have done so far apparently isn't relevant to the exam. I am curious as to why none of the legitimate exam preparation companies I have traditionally used with in the past(Transcender, Boson, etc...) offer any products for VCP-510, seems like there is a lack of incentive there for some reason. My experience so far is that the "official" exam prep material completely missed the mark, other exam prep vendors have no products for VCP-510, leaving few alternatives. I appreciate any advice the community and offer, thanks in advance.