Cisco UCS – A lot for me to learn

Hello Hardware,

That’s right you heard me say it alright. CISCO UCS or in twitter terms #CiscoUCS #Cloud.  Tonight I got my first stab at actually researching, and read up on Cisco UCS, and I have to say, its does sound promising.  Right now, though, I haven’t given much thought to the cost of such a system.  Lately we see a lot of different offerings when it comes to hardware platforms to run a virtual shop on, and up til recent I haven’t even read about or seen a Cisco Server in a while.  In fact, the last time I saw a Cisco server was when call manager was running on Windows 2000 SP4 (HP MCS Hardware) back on version 5.5.  I guess I am beginning to get old…

Enough Said… let’s move on… Nothing to see here..

The first reading I did on Cisco UCS  was today on Ciscos site:

Joe wrote on inter-fabric communication on the Cisco blade servers.  It peaked my interest seeing how UCS is uniquely designed to handle communication.

You can run the fabric interconnects in two seperate modes: End-Host Mode and Host Mode (EHM and HM).  Most users typically choose EHM for simplicity. It took me a while to get it all to sink in, but I think I finally got it in a nutshell.  The big point is that you can have 10GbE, and if you need to manage traffic more effectively, at the host level, you can utilize vSphere switching such as: vSS, dVS, and Cisco Nexus 1000V.  Essentially, the Cisco 1000V is what you can use to make it even more managable.  It also seems like it is definitely more geared to the clouddue to the so-called simplicity.  You still will have to utilize 10gbe networks which can still cost a pretty penny.  I am just glad it is finally beginning to make sense… at least right now..

Props to Joe who did a good job and I think he even knows a thing or two about vmware.  😉

Thanks to ADAM Hash tag corrected!

***Disclaimer: The thoughts and views expressed on  and Chad King in no way reflect the views or thoughts of his employer or any other views of a company. These are his personal opinions which are formed on his own. Also, products improve over time and some things maybe out of date. Please feel free to contact us and request an update and we will be happy to assist. Thanks!~


About Chad King

I am an IT professional working in the industry for over 10 years. Starting in Microsoft Administration and Solutions I was also a free lance consultant for small businesses. Since I first saw virtualization I have always been fascinated by the concept. I currently specialize in VMware technology. I consult daily on many different types of VMware Solutions. I have experience in all domains related to virtualization and cloud solutions. From help desk, administration, engineering, implementation, and design allowing me to provide creative solutions with the understanding and gaps at all levels.

Posted on December 10, 2010, in Cloud, Hardware and tagged , , , , . Bookmark the permalink. 6 Comments.

  1. Small correction, UCS supports EHM and “Switch Mode”, not “Host Mode”, but I think that was a late night error 🙂

    Nice article. Let me know if you need any questions answered.


  2. Try out the #CiscoUCS hash tag instead of #cisco #ucs. Apparently, #ucs refers to something bad in German.

    Also, we run EHM not for simplicity, but for functional differences. IN switch mode, ports are blocked using STP so no loops are formed. In EHM, UCS looks like a big server to the network. For some really good networking info, check out He has some excellent articles and videos on UCS networking.



  3. Thanks for the mention, and keep up with the good work! Two quick and trivial corrections:

    UCS switching options are: Switch mode (standard bridging applies) and End-Host Mode (EHM) sometime called Host-Mode (HM.) No matter what you call it EHM or HM moral is the Fabric Interconnects act like ‘hosts’ to upstream switches.

    Second is that Define the Cloud ( is independant (as am I) and in no way affiliated with Cisco, even if I do love some of their stuff.



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