Myths, misconceptions and half-truths about virtualisation

Thanks to VMware you can barely turn around today without someone using the V-word and with every aspect of the English language, and some from ancient Sumeria, now beginning with V it will only get worse.

There is no question that virtualisation holds a lot of promise for the enterprise, from decreased cost to increased efficiency, but between the ideal and the reality is a chasm of broken promises, mismatched expectations and shady vendors waiting to gobble up your dollars and leave a trail of misery and despair in their wake.

To help avoid the landmines I give you the top myths, misconceptions, half-truths and outright lies about virtualisation .

Virtualisation reduces complexity

It seems counter-intuitive that virtualisation would introduce management complexity, but the reality is that all the security and systems management requirements currently facing enterprises today do not disappear simply because an OS is a guest within a virtual environment, in fact they increase.

Not only does one need to continue to maintain the integrity of the guest OS (configuration, patch, security, application and user management and provisioning), one also needs to maintain the integrity of the virtual layer as well. Problem is this is done through disparate tools managed by FTE’s (full time employees) with disparate skills sets.

Organisations also move from a fairly static environment in the physical world, where it takes time to provision a system and deploy the OS and associated applications, to a very dynamic environment in the virtual world where managing guest systems – VMsprawl – becomes an exercise in whack-a-mole.

Virtualisation increases security

Customers that are drawn to virtualisation should be aware virtualisation will add another layer that needs to be managed and secured. Data starts moving around in ways it never did before.

Static security measures like physical security and network firewalls don’t apply in the same way and need to be augmented with additional security measures, which will increase both cost and complexity.

Network operations, security operations, and IT operations will inherit management of both the physical and the virtual systems so their jobs get more complicated in some ways, and they get simpler in other ways.

Again it would seem counter intuitive that virtualisation doesn’t increase security, but the reality is that virtualisation adds a level of complexity to organisational security that is marked by new attack vectors in the virtual layer, as well as the lack of security built into virtual environments, which is made even more difficult by the expertise required to secure virtual environments, skills that are sadly lacking in the industry.

Virtualisation will not require specialisation

What is really interesting about the current state of virtualisation technology in the enterprise is the amount of specialisation that is required to effectively manage and secure these environments, not only will one need to understand, at least conceptually, the dynamics of systems and security management, but one will also need to understand the technical implementations of the various controls, the use and administration of the management tools, and of course follow what is a very dynamic evolution of technology in a rapidly changing market.

Virtualisation will save you money today

Given the current economic climate the CFO is looking for hard dollar savings today. Virtualisation has shown itself to provide more efficient use of resources and faster time to value than traditional environments.

However the reality is that reaching the promised land requires an initial investment in time, resources, and planning if one is to realise the benefits. Here are some areas that virtualisation may provide cost savings and some realities about each of them:

  • Infrastructure consolidation– Adding big iron and removing a bunch of smaller machines may look like an exercise in cost-cutting, but remember you still have to buy the big iron, hire consultants to help with the implementation, acquire new licenses, deploy stuff, and of course no one is going to give you money for the machines you no longer use.
  • FTE reduction– Consolidating infrastructure should allow one to realise a reduction in FTE’s right? The problem is that now you need FTE’s with different skills sets, such as how to actually deploy, manage, secure and manage these virtual environments, which now require separate management infrastructures.
  • Decrease in licensing costs – Yes, well, no, depends on if you want to pirate software or not, which is actually easier in virtual environments. With virtual sprawl software asset and license management just jumped the complexity shark.
  • Lower resource consumption– See above references to complexity, security and FTE’s, however one area where virtualisation will have immediate impact is in power consumption and support of green IT initiatives, but being green can come at a cost

Virtualisation won’t make you rich, teach you how to invest in real-estate, help you lose weight or grow a full head of hair, it won’t make you attractive to the opposite sex, nor will it solve all your problems, it can improve the efficiency of your operating environment but it requires proper planning, expectation setting and careful deployment.

There will be an initial, in some cases substantial, investment of capital, time, and resources, as well as an ongoing effort to manage the environment with new tools and train employees to acquire new skills.

Want to guess how many start-ups will be knocking on your door to solve one or more of the above management issues?


Copyright © 2009 IDG Communications, Inc.

8 highly useful Slack bots for teams
Shop Tech Products at Amazon