Types of Private Clouds

February 15, 2012 7:31 am 0 comments

Types of Private Cloud

Private Clouds are in the News. AT&T announced yesterday(Monday, 13th Feb 2012) its Virtual Private Cloud offering. It is interesting to see terminology evolve in the Cloud world. Am sure we have heard the terms Public Cloud, Private Cloud, Hybrid Cloud but maybe not Virtual Private Cloud.

Telcos are big proponents of the Cloud. It is often argued that the Telcos stand to be the biggest gainers from the increased Internet Traffic and hence their desire to create new terms. Net Neutrality is a whole different debate.

What do these Cloud terms mean?

Public Cloud: Is easy to understand. It is a cloud offering that is public in nature. Generally refers to an IAAS(Infrastructure as a Service) or a PAAS (Platform as a Service) offering that is provided by a vendor (naturally means outside your Enterprise or Corporate Network)

Hybrid Cloud: By the definition of the term Hybrid should be easily understood as a combination of clouds. Generally thought of as a combination of Public and Private Clouds.

Private Cloud: By the definition of the term Private should easily be understood as a Cloud that is Private to your company.

If the above definitions are so simple and clear then why are there additional terms around the Cloud like Virtual Private Cloud? Let us explore!

What is Virtual Private Cloud?

Virtual Private Cloud = Virtual Private Network + Cloud Technology Stack (as offered by your Cloud(Public) Provider)

In effect it is not vastly different than what you have been doing all these years. Especially, if you have already been using an outsourced hosting or Data Center provider.

E.g. You used a VPN to access your servers that were hosted with an outsourced data center.

There is a slight twist in the tale here:
You are now being offered a Cloud Stack instead of plain old servers by your outsourced data center provider.

What is the Virtual Private Cloud Stack?

Ideally a cloud stack should look like something that works behind the scenes and powers Force.com, Amazon.com or Google.com.

In reality, odds are 9 out of 10 cases your vendor’s stack looks like this:

a) Virtualization(Citrix XenServer)
b) Virtualization (Microsoft Hyper-V)
c) Virtualization (Oracle VM)
d) Virtualization (VWWare vSphere)

What is Virtualization?

Virtualization is a technology that was built mainly for server consolidation. So, you could run multiple applications on one box.

Think Multi-tenancy on a Large Box

When is Virtualization Good?: It is a great way to save cost on hardware if your aim is to run 100s of instances of applications and you expect each instance to have very Low Utilization. E.g. Development, Test, Staging, UAT or other Non-Production environments.

When is Virtualization Not So Good?: Production Environments where the need is High Availability, High Performance, Low Latency.

Myth (Busted): The Virtual in Virtual Private Cloud has nothing to do with Virtualization. It actually comes from the Virtual in VPN(Virtual Private Network).

One would argue here. How does it matter, whether it is VPN or Virtualization or both, at the end of the day it is a Private Cloud.

Virtual Private Cloud

Virtual Private Cloud - Issues

This matters because of the following issues:
a) Security: I Still don’t know where my Data is. One of the key arguments against the cloud.
b) Security: The Cloud is still outside my Network. Hence, it is not as secure as my own perimeter.
c) Security: The Cloud is run by someone else and hence has greater risk. I don’t know who has access to my information.
d) Security: The Cloud exposes my Network as it connects to me. I am exposed!

All of the above concerns get more than adequately addressed if we keep everything else the same except switch the Private Cloud servers from outside to within your network.

Telcos should not think of the above statement as a deterrent to their revenues. Think of it as a method to stay competitive or even gain market share from other Telcos.

Hence, let us coin a new Cloud term today: ‘Captive Private Cloud’

(Please don’t go arrgh! not one more cloud term! this is the medicine pill)

What is Captive Private Cloud?

A Private Cloud that runs within your Physical Network Perimeter (i.e. within your own Data Center) is a Captive Private Cloud.

I can almost hear a few people saying “then how is it Cloud?” because it has the following issues:

Cost: The hope of the Cloud was that I can ramp-up and down on demand and as a consequence save a lot of money by not paying for hardware I don’t use. Also it was supposed to give me the Capex savings and provide leverage on Opex. This surely cannot happen if I buy the infrastructure and run the Cloud in my own Data Center.

Skills: Anyway, even if we took the Capex hit, we still don’t have the Cloud skills in-house. We need to then hire additional resources and there goes your cost and time to market advantages!

Technology: Finally, you are just giving me Virtualization in Box. I have already been buying that form you all this while, so what’s new?

Captive Private Cloud

Captive Private Cloud - Issues

Well, here are a few things to consider:

a) Think Sunk Cost: Yes Captive means Capex. Therefore, the right time to do Captive Private Cloud is when you are already looking at a large scale hardware(server) refresh and have already allocated the Capex.

b) Think Re-engineering: Yes Captive means Additional Skills or Retraining (I prefer to avoid the management word retooling when speaking about people). At any given point you have dozens of projects in flight or new re-engineering initiatives, pull them under the Private Cloud umbrella.

c) Find an Open Cloud Vendor: Yes if you go to your current Enterprise Vendor or Telco you will get hyper as they will give you V-5 (Virtualization 5 times before you realize it is the same thing). So don’t call your Enterprise Vendor or Telco. Ask your CTO or Head of IT Infrastructure to call someone who has a real Private Cloud Platform e.g. a well funded Open Source start-up, there are dozens around. Thanks to Big Data!.

Watch for the next post on Big Data soon.

_____________________________________________________________________________

Read: Rethinking Private Cloud : A series of thoughts on why Wall Street and Buy Side firms should look to Private Clouds and vendors who provide that technology.

In this interview I have questioned conventional wisdom at Wall Street in their continued use of proprietary Databases and Mainframes.

This is the era of the Cloud.

However, to dispel the concerns of security the model proposed is Private Cloud that is truly Private and sits within the Enterprise’s Sphere of Control.

At the time of the Interview the term Captive Private Cloud had not been coined. However, I must thank Eugene Grygo for his astute questions which led me to finally coin this term.

Leave a Reply


Other News

  • Big Data Cloud Computing Innovation Cloud Standards

    Cloud Standards

    The Cutter IT Journal August Issue carries an paper written on CARMA. The paper is a sneak preview of the content you can expect in the Cloud Standards book when it is out this winter. You can download a Free Copy of the Issue. If you missed our earlier conversations on Cloud and CARMA. I am in the process of writing my second book Cloud Standards, which is due later this year as part of the Cloud series, The Paradigm […]

    Read more →
  • Uncategorized Clearing the Cloud by Air India

    Clearing the Cloud by Air India

    This is to interested CEOs and CIOs in India who visit this Blog, you can now read about the Cloud when flying at 36,000 feet in Air India. In the past few months I have been talking to various CIOs and CEOs about the current state of the Cloud. What is most interesting to note is that despite so much buzz around the Cloud there is still very little clarity as to what the Cloud is all about and what […]

    Read more →
  • Big Data Cloud Computing Big Data Simplified – Part 3

    Big Data Simplified – Part 3

    In the 1st Part of this 3 Part Post we tried to understand the question : What is Big Data? Then in part 2 of this post we tried to understand the Issues with Data and the Evolution of Technology around Data. Now in this 3rd and final part of the Post we try to understand the Importance of Big Data and why Businesses should care about Big Data. Impact and Importance of Big Data on Business There are many […]

    Read more →
  • Big Data Cloud Computing Big Data Simplified – Part 2

    Big Data Simplified – Part 2

    In Part 1 of this 3 part post we tried to understand if not answer the question: What is Big Data? In Part 2 of this post we shall try understand the Issues around Big Data or Data more broadly. We shall also try and understand how technology has evolved around Data, Databases and what this means in the Big Data context. Issues with Data? Need for faster access to information, storage for larger and larger volumes of information and […]

    Read more →
  • Big Data Cloud Computing Big Data Simplified – Part 1

    Big Data Simplified – Part 1

    So, if you read the book (Cloud Basics – The Paradigm Shift) I had said it was really mean’t to be a Blog Post or a Series of Posts that ended up becoming a book. As, I write my first post on Big Data I can clearly see the need for a Book or maybe even a series of Books here that can help clear up the mist on Big Data. More over there is a need to clarify what […]

    Read more →
  • Cloud Computing Types of Private Clouds

    Types of Private Clouds

    Private Clouds are in the News. AT&T announced yesterday(Monday, 13th Feb 2012) its Virtual Private Cloud offering. It is interesting to see terminology evolve in the Cloud world. Am sure we have heard the terms Public Cloud, Private Cloud, Hybrid Cloud but maybe not Virtual Private Cloud. Telcos are big proponents of the Cloud. It is often argued that the Telcos stand to be the biggest gainers from the increased Internet Traffic and hence their desire to create new terms. […]

    Read more →
  • Business Finance Management How to get valued like Facebook, $100 Bn?

    How to get valued like Facebook, $100 Bn?

    Is Facebook worth $100 Billion? was a post made by the Wall Street Journal a few months ago which carried an interesting perspective from Geoff Yang, Founding Partner with Redpoint Ventures, Menlo Park. Geoff gave an interesting perspective on how Facebook could be valued based on its potential market share of the Ad market and the projected growth of the market by 2015. You can read the full post here. (If you know how to get past the Pay Wall […]

    Read more →
  • Health & Wellness Life Uncategorized Wisdom Do Blackholes exist on Earth?

    Do Blackholes exist on Earth?

    Blackholes exist right here on earth. What is a Blackhole?: Light goes in and is never reflected back to the source or sender. It is believed that this happens because Blackholes have a high amount of gravity and hence pull in anything that is thrown towards them. At least, so says the Theory of General Relativity. Then there is another theory called Quantum Mechanics that says Black holes are black bodies(no kidding) hence they must emit heat radiation like any […]

    Read more →
 

Please log in to vote

You need to log in to vote. If you already had an account, you may log in here

Alternatively, if you do not have an account yet you can create one here.