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Private Clouds Must Be Agile
Filed in Cloud Industry Insights by Ben Kepes | September 11, 2012 9:00 am

CloudU Notebooks is a weekly blog series that explores topics from the CloudU certificate program[1] in bite
sized chunks, written by me, Ben Kepes, curator of CloudU. How-tos, interviews with industry giants and the
occasional opinion piece are what you can expect to find. If that’s your cup of tea, you can subscribe here[2].

I recently read a well reasoned post[3] by HP’s Cloud CIO Christian Verstraete. In the post Verstraete
reflected on a Twitter exchange he’d had responding to the claims by someone that private cloud was a myth.
The private/public debate has raged for a few years now and the two sides go something like this:

      Opponents of private cloud say that private is a myth because it doesn’t deliver the efficiencies and
      abstraction of non-core activity that public cloud brings. These folks are adamant that private cloud
      cannot compete with the economics, the scale, the pure focus and the benefits that public cloud
      delivers.
      Proponents of private cloud, however, say that for some organizations – legislative requirements,
      compliance issues, existing investments or simply internal reluctance make public cloud adoption
      difficult — private cloud delivers many of the benefits while still meeting the “bottom line” of the
      organization

To put it into context, my definition of cloud uses the acronym OSSM. That is, to be considered cloud an
asset should be on-demand, scalable, self-service and measured. As long as it meets these requirements, I’m
relaxed about calling it cloud. So a virtualization product on its own, for example, isn’t cloud because it
doesn’t deliver on the self-service and measured parts of the requirement.

So when is private cloud valid?
My key requirement for clouds is that they deliver on self-service and metering. My belief is that over time
organizations will move to a model that seeks to very accurately identify IT costs, and report them alongside
revenue figures. In order to do so, it is important that any service utilized is measurable on a per-unit basis.
So, no, virtualization does not equate to cloud. But a coherent strategy of virtualization alongside automation,
self-service and scale is cloud, even if it happens to occur on-premise.

But can private = scale?
This part of the discussion tends to drop into a semantic argument. Opponents of private cloud suggest that a
fundamental requirement of cloud is the ability to scale and that, in the event that infrastructure resides on-
premise, that scaling is therefore limited. I believe that this view is shortsighted. All infrastructure, after all,
has limitations. It is conceivably possible to max out the total infrastructure available from any cloud vendor.
Sure, it would take an unbelievably massive workload to do it, but it’s possible – cloud, after all, sits on real
hardware somewhere. The key thing here is that for an enterprise scale means the realistic scale requirements
of an individual business unit. If I run a particular department within BigCo, I don’t need to know that my
company’s infrastructure can scale to map the human genome (unless of course that’s the particular
requirement I have). All I need to know is that it can meet my particular requirements. Across an entire
organization the kind of benefits that public cloud vendors can enjoy from different customers having usage
and peak requirements are also applicable – it’s unlikely that every department within BigCo has its peak
infrastructure requirement on the very same day. And if they do, that is an IT task to manage – for my
business unit, I just need to know that my little marketing workload can scale as I need it to.

On-demand and self-service?
Yes, a fundamental part of cloud is that a user can, by simply swiping their credit card, spin up servers at
will. There is no fundamental reason why business units can’t enjoy the same level of empowerment within
an enterprise and using on-premise hardware. Yes, it requires some technology to do so (some automation,
some charge-back mechanism), but it is possible. While I agree wholeheartedly that virtualization doth not a
cloud make, but it’s going a step too far to say that it is impossible to introduce aspects of on-demand and
self-service provision within the on-premise data center.

Summary
Cloud is a delivery mechanism for technology. As with any delivery mechanism, there are several ways of
doing things and not every solution will fit into one rigid definition. Private cloud is a valid concept, and is
delivering real value to organizations today as they strive to attain higher levels of agility within the
constraints of their regulatory, compliance and internal culture landscape. To deny private cloud is to create
an elitist and ultimately damaging schism in something that should be promoted.

Endnotes:

   1. CloudU certificate program: http://www.rackspace.com/knowledge_center/cloudu/curriculum
   2. here: http://www.rackspace.com/cloud/blog/author/ben-kepes/feed/
   3. post: http://h30507.www3.hp.com/t5/Cloud-Source-Blog/Private-Cloud-is-a-Myth-Really/ba-p/118631

Source URL: http://www.rackspace.com/blog/private-clouds-must-be-agile/


Copyright ©2012 The Official Rackspace Blog unless otherwise noted.

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Private Clouds Must Be Agile

  • 1. Private Clouds Must Be Agile Filed in Cloud Industry Insights by Ben Kepes | September 11, 2012 9:00 am CloudU Notebooks is a weekly blog series that explores topics from the CloudU certificate program[1] in bite sized chunks, written by me, Ben Kepes, curator of CloudU. How-tos, interviews with industry giants and the occasional opinion piece are what you can expect to find. If that’s your cup of tea, you can subscribe here[2]. I recently read a well reasoned post[3] by HP’s Cloud CIO Christian Verstraete. In the post Verstraete reflected on a Twitter exchange he’d had responding to the claims by someone that private cloud was a myth. The private/public debate has raged for a few years now and the two sides go something like this: Opponents of private cloud say that private is a myth because it doesn’t deliver the efficiencies and abstraction of non-core activity that public cloud brings. These folks are adamant that private cloud cannot compete with the economics, the scale, the pure focus and the benefits that public cloud delivers. Proponents of private cloud, however, say that for some organizations – legislative requirements, compliance issues, existing investments or simply internal reluctance make public cloud adoption difficult — private cloud delivers many of the benefits while still meeting the “bottom line” of the organization To put it into context, my definition of cloud uses the acronym OSSM. That is, to be considered cloud an asset should be on-demand, scalable, self-service and measured. As long as it meets these requirements, I’m relaxed about calling it cloud. So a virtualization product on its own, for example, isn’t cloud because it doesn’t deliver on the self-service and measured parts of the requirement. So when is private cloud valid? My key requirement for clouds is that they deliver on self-service and metering. My belief is that over time organizations will move to a model that seeks to very accurately identify IT costs, and report them alongside revenue figures. In order to do so, it is important that any service utilized is measurable on a per-unit basis. So, no, virtualization does not equate to cloud. But a coherent strategy of virtualization alongside automation, self-service and scale is cloud, even if it happens to occur on-premise. But can private = scale? This part of the discussion tends to drop into a semantic argument. Opponents of private cloud suggest that a fundamental requirement of cloud is the ability to scale and that, in the event that infrastructure resides on- premise, that scaling is therefore limited. I believe that this view is shortsighted. All infrastructure, after all, has limitations. It is conceivably possible to max out the total infrastructure available from any cloud vendor. Sure, it would take an unbelievably massive workload to do it, but it’s possible – cloud, after all, sits on real hardware somewhere. The key thing here is that for an enterprise scale means the realistic scale requirements of an individual business unit. If I run a particular department within BigCo, I don’t need to know that my company’s infrastructure can scale to map the human genome (unless of course that’s the particular requirement I have). All I need to know is that it can meet my particular requirements. Across an entire organization the kind of benefits that public cloud vendors can enjoy from different customers having usage and peak requirements are also applicable – it’s unlikely that every department within BigCo has its peak
  • 2. infrastructure requirement on the very same day. And if they do, that is an IT task to manage – for my business unit, I just need to know that my little marketing workload can scale as I need it to. On-demand and self-service? Yes, a fundamental part of cloud is that a user can, by simply swiping their credit card, spin up servers at will. There is no fundamental reason why business units can’t enjoy the same level of empowerment within an enterprise and using on-premise hardware. Yes, it requires some technology to do so (some automation, some charge-back mechanism), but it is possible. While I agree wholeheartedly that virtualization doth not a cloud make, but it’s going a step too far to say that it is impossible to introduce aspects of on-demand and self-service provision within the on-premise data center. Summary Cloud is a delivery mechanism for technology. As with any delivery mechanism, there are several ways of doing things and not every solution will fit into one rigid definition. Private cloud is a valid concept, and is delivering real value to organizations today as they strive to attain higher levels of agility within the constraints of their regulatory, compliance and internal culture landscape. To deny private cloud is to create an elitist and ultimately damaging schism in something that should be promoted. Endnotes: 1. CloudU certificate program: http://www.rackspace.com/knowledge_center/cloudu/curriculum 2. here: http://www.rackspace.com/cloud/blog/author/ben-kepes/feed/ 3. post: http://h30507.www3.hp.com/t5/Cloud-Source-Blog/Private-Cloud-is-a-Myth-Really/ba-p/118631 Source URL: http://www.rackspace.com/blog/private-clouds-must-be-agile/ Copyright ©2012 The Official Rackspace Blog unless otherwise noted.