And if you couldn't make this year's Cisco IT EMEAR Data Centre Day, here is the page to download the slides (PDF) for each of the presentations:
http://www.cisco.com/c/en/us/about/cisco-on-cisco/webinars-events.html#~Data Centre Day

If it doesn’t start there, go to the “Data Centre Day” tab, and then to “February 2016”.

Videos of each presentation, AND the virtual video tour of the Allen Texas Data Centre, are available to Cisco employees. So if you know one, ask! :-)