I found this document floating around internally and I didn't see anything marked confidential, so I'm going to share ... information wants to be free :-)
It's a guide that is rather helpful in troubleshooting SAN Boot on UCS. Authored by https://twitter.com/KarlVietmeier
Other related helpful SAN troubleshooting:
Scott, thanks for posting this, something I should have done long ago!
Note - I have a newer version of this document and it has also been turned into a CiscoLive! Lab Session which we will be offering in San Diego next year.
. : W W T : . Karl Vietmeier | Technical Solutions Architect | OpenStack and Cloud Practice | cell: +1.949.300.7123 | email@example.com<mailto:firstname.lastname@example.org>| www.wwt.com