This is a compiled list of recommended readings for those purusing CCIE Data Center. This by no means is an all-encompassing list, these publications are simply resources to help with your hands-on experience to teach some of the deeper theory and technically lower level concepts. Please feel free to add additional resources to this list.
Data Center Fundamentals (ISBN-10: 1-58705-023-4)
NX-OS and Cisco Nexus Switching (ISBN-10: 1-58705-892-8)
Cisco Unified Computing System (UCS) (ISBN-10: 1-58714-193-0)
I/O Consolidation in the Data Center (ISBN-10: 1-58705-888-X)
Storage Networking Fundamentals (ISBN-10: 1-58705-162-1)
Data Center Virtualization Fundamentals (ISBN-10: 1-58714-324-0)
Fibre Channel Switched Fabric, Robert Kembel (ISBN-10: 0931836115)
Not to post advertisements, but in case it's helpful the NX-OS and Cisco Nexus Switching book is the eBook of the week at CiscoPress and is 50% off right now (8/28/13).
Just incase you've been waiting to buy....
Safari Online bookshelf does not have "NX-OS and Cisco Nexus Switching" at the ISBN listed, but they do have
These are the same books. The difference between these 2 books is ISBN-10: 1-58705-892-8 is 1st edition, and ISBN-10: 1-58714-304-6 (listed above) is 2nd edition.
I read Implementing Cisco UCS Solutions ISBN 978-1-78217-066-2.
It is just a nice walkthrough of the UCS but I found it very readable and worked through most of it in a weekend with the emulator.