Many companies have implemented virtualization in various shapes and forms into existing computing environment.
They have followed the path of standardization of environments, Consolidating servers and datacenters, implementing Virtual servers for Development and Test and DR environments, implementing Virtualization for Production as P2V etc. are all benefits of having virtualization.
Some also run highly virtualized IT with automation provided by system management solutions. One can imagine that many have already reaped the benefits of virtualization including increased utilization of servers, power savings, reduced server footprint, etc.
The question now comes up - “Is High Virtualization the same as Private Cloud?” or “We are already running a highly virtualized computing today, do we still need private cloud?”
And in many scenarios the answer is still YES. And it really depends on if the attributes delivered by private cloud are in place already or still needed. This point is that virtualization and private cloud are not the same! There is no question that virtualization is an enabler.
Private cloud is a cloud dedicated to an organization. On premises or hosted by a 3rd party, private cloud must exhibit the characteristics of cloud computing - else it is not the CLOUD.
Specifically, private cloud is expected to deliver 3 key attributes: Automation, Elasticity, and Self-service to differentiate itself from a highly virtualized or automated environment.
You will notice that I do not include ubiquitous access and pay-as-you-go model as key attributes for Private Cloud. These two are not considered as essential due to: for private cloud IT may want more control, instead of allowing ubiquitous access; and the pay-as-you-go or charge-back model simply may not be feasible to implement in an organization.
Without having virtualization in place, cloud will be more a concept than an implementable solution. Nonetheless, without self-service and automatic deployment, it may become cost-prohibitive to implement private cloud. These 3 key attributes convert a virtualization solution into a cloud setting.
-Cheers