Welcome!

Agile Computing Authors: Liz McMillan, Yeshim Deniz, Elizabeth White, Zakia Bouachraoui, Pat Romanski

Related Topics: @CloudExpo

@CloudExpo: Article

Cloud Computing: What Are Private Clouds?

"Cloud privatization" is on the rise

Jian Zhen's Blog

The world of clouds these days is full of definitions and counter-definitions. There are many posts that try to define the concept of cloud computing; many that try to distinguish utility computing, grid computing and cloud computing; many that try to define public vs private clouds; and many that dismisses the notion of private clouds.

John Foley, in his article “The Rise Of Enterprise-Class Cloud Computing“, referred to private cloud as an oxymoron,

That’s an oxymoron since cloud computing, by definition, happens outside of the corporate data center, but it’s the technology that’s important here, not the semantics.

But by whose definition? The industry as a whole haven’t even been able to nail down a concrete definition of cloud computing. Given that there’s no concrete definition, then by definition, private cloud is not an oxymoron. But I do agree with John, let’s focus on the technology and not the semantics.

Geva Perry, chief marketing officer at GigaSpace Technologies, did just that. By focusing on the technology and architectural aspects of cloud computing, he wrote in a GigaOM blog post,

Cloud computing is a broader concept than utility computing and relates to the underlying architecture in which the services are designed. It may be applied equally to utility services and internal corporate data centers, as George Gilder reported in a story for Wired Magazine titled The Information Factories.

Cloud Attributes

But instead of everyone trying to create their own definition of clouds, let’s look at the list of attributes that clouds have and compare public and private clouds.

  • Elasticity: The ability to dynamically provision (expand) or de-provision (shrink) the computing capacity as needed.
  • Utility: The ability to be charged by the amount of resources used. Great examples would include Amazon Web Services’ charge model. In an enterprise setting, sometimes business units are charged by the internal IT groups for the resources they requested. The utility model would allow IT groups to perform chargebacks in a similar model to AWS.
  • Scalability: The ability to either handle growing amounts of work in a graceful manner, or to be readily enlarged. For example, it can refer to the capability of a system to increase total throughput under an increased load when resources (typically hardware) are added. [ via wikipedia ]
  • Reliability & Availability: No failed whale! The cloud infrastructure and platforms must be reliable and available to the applications that are using them. There’s probably a lot of technology involved here to make this happen. For example, the ability to transparently migrate a virtual server when the running node has failed.
  • Manageability: The ability to effectively manage (start/stop/migrate/expand/shrink/etc) the different server and application instances in the cloud.
  • Security: The ability to secure the data and access to the cloud. Public clouds still have a trust issue with many of the enterprise customers, which is why the ? is there.
  • Performance: The ability to execute and complete tasks within the acceptable timeframe (defined by the SLA).
  • API: I consider this to be a desired attribute. This refers to the ability of doing resource management via some type of documented programming interface.
  • Virtualization: Applications are decoupled from the underlying hardware. Multiple applications can run on one computer (virtualization a la VMWare) or multiple computers can be used to run one application (grid computing). [ via GigaOM ]
  • Multi-Tenancy: The ability to house multiple customers using the same infrastructure and still be able to segregate the data.
  • SLA-Driven: The system is dynamically managed by service-level agreements that define policies such as how quickly responses to requests need to be delivered. If the system is experiencing peaks in load, it will create additional instances of the application on more servers in order to comply with the committed service levels — even at the expense of a low-priority application. [ via GigaOM ]
  • Support: The ability to smack someone upside the head when something fails.

      Attributes Public Private
      Elasticity
      Utility
      Scalability
      Reliability & Availability
      Security ?
      Performance
      API
      Virtualization
      Multi-Tenant
      SLA-Driven ?
      24×7 Support

So if we are looking purely from a technology perspective, private clouds can absolutely exist. In fact, given the questions for the public cloud, enterprises are more likely to experiment with private clouds for mission critical applications.

Market and Vendors

According to Merrill Lynch, the public and private cloud infrastructure, platform, applications and advertising together will be a $160 billion market by 2011, or roughly 12% of the total worldwide software market.

The total $160bn addressable market opportunity includes $95billion in
business and productivity apps, and another $65 billion in online advertising.

IBM and Sun have comprehensive solutions for ‘internal Clouds’. Dell targets large scale data centers, and HP provides ‘everything as a service’, making their solutions attractive for ‘external Clouds’.

So who are some of the private cloud infrastructure/platform startups that are taking advantage of this $160 billion market? (Feel free to leave a comment if I missed anyone.)

    Company Product
    3Tera AppLogic
    Arjuna Agility
    Cassatt Active Response?
    Elastra Elastra Cloud Server
    Enomaly Enomalism
    GigaSpaces XAP, EDG, and Community Edition

     

More Stories By Jian Zhen

Jian Zhen, CISM, CISSP, is the Director of Cloud Solutions at VMware. He is responsible for working with the world’s largest service providers to design cloud infrastructures and platforms, and creating partner ecosystems for the clouds. Previously, he was the VP of Emerging Technologies at LogLogic, the log management and intelligence leader in San Jose, Calif. At LogLogic, he was responsible for the overall vision and strategy of LogLogic’s product lines. Prior to joining LogLogic, he was responsible for developing the Managed Security Services infrastructure for Exodus/Savvis. During his 12+ years career in the information security field, he has performed audits for many Fortune 1000 companies as an IT auditor with Ernst & Young and Charles Schwab. In his spare time, Jian also writes a variety of topics covering cloud computing, IT security, intellectual property protection, and managed services. You can also find him on LinkedIn and Twitter.

Comments (1)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


IoT & Smart Cities Stories
DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City and will bring together Cloud Computing, FinTech and Blockchain, Digital Transformation, Big Data, Internet of Things, DevOps, AI, Machine Learning and WebRTC to one location.
@DevOpsSummit at Cloud Expo, taking place November 12-13 in New York City, NY, is co-located with 22nd international CloudEXPO | first international DXWorldEXPO and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time t...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...
Charles Araujo is an industry analyst, internationally recognized authority on the Digital Enterprise and author of The Quantum Age of IT: Why Everything You Know About IT is About to Change. As Principal Analyst with Intellyx, he writes, speaks and advises organizations on how to navigate through this time of disruption. He is also the founder of The Institute for Digital Transformation and a sought after keynote speaker. He has been a regular contributor to both InformationWeek and CIO Insight...
CloudEXPO New York 2018, colocated with DXWorldEXPO New York 2018 will be held November 11-13, 2018, in New York City and will bring together Cloud Computing, FinTech and Blockchain, Digital Transformation, Big Data, Internet of Things, DevOps, AI, Machine Learning and WebRTC to one location.
Bill Schmarzo, Tech Chair of "Big Data | Analytics" of upcoming CloudEXPO | DXWorldEXPO New York (November 12-13, 2018, New York City) today announced the outline and schedule of the track. "The track has been designed in experience/degree order," said Schmarzo. "So, that folks who attend the entire track can leave the conference with some of the skills necessary to get their work done when they get back to their offices. It actually ties back to some work that I'm doing at the University of San...
Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settlement products to hedge funds and investment banks. After, he co-founded a revenue cycle management company where he learned about Bitcoin and eventually Ethereal. Andrew's role at ConsenSys Enterprise is a mul...
IoT is rapidly becoming mainstream as more and more investments are made into the platforms and technology. As this movement continues to expand and gain momentum it creates a massive wall of noise that can be difficult to sift through. Unfortunately, this inevitably makes IoT less approachable for people to get started with and can hamper efforts to integrate this key technology into your own portfolio. There are so many connected products already in place today with many hundreds more on the h...
DXWorldEXPO | CloudEXPO are the world's most influential, independent events where Cloud Computing was coined and where technology buyers and vendors meet to experience and discuss the big picture of Digital Transformation and all of the strategies, tactics, and tools they need to realize their goals. Sponsors of DXWorldEXPO | CloudEXPO benefit from unmatched branding, profile building and lead generation opportunities.
DXWorldEXPO LLC announced today that Telecom Reseller has been named "Media Sponsor" of CloudEXPO | DXWorldEXPO 2018 New York, which will take place on November 11-13, 2018 in New York City, NY. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.