Dan Kusnetzky

Daniel Kusnetzky, a reformed software engineer and product manager, founded Kusnetzky Group LLC in 2006. He's literally written the book on virtualization and often comments on cloud computing, mobility and systems software. In his spare time, he's also the managing partner of Lux Sonus LLC, an investment firm.

Ken Hess

Kenneth 'Ken' Hess is a full-time Windows and Linux system administrator with 20 years of experience with Mac, Linux, UNIX, and Windows systems in large multi-data center environments.

Latest Posts

Virtual Appliances - the good, the bad and the ugly

It would be very wise for the organization's IT department to find out what licensing applies to a virtual image. It would be much better if the terms and conditions of use are known and the appropriate operational and administrative procedures defined before a virtual image is unleashed on the network.

May 8, 2007 by

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Why choose a virtual environment?

Why do organizations choose to go to the time and trouble to adopt some form of virtualization technology? Those thinking that virtualization only refers to the use of virtual machine software to allow a single system to support multiple, encapsulated workloads would mention the factors of time and cost (see Cost and energy benefits driving virtualization).

May 7, 2007 by

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Conversation with John Engates, Rackspace's CTO

Rackspace's PR firm contacted me and asked if I would be interested in speaking with Rackspace's CTO, John Engates, to get a technology consumer's view of the state of virtualization technology today.  I, of course, jumped at the chance since I usually speak with representatives of various vendors.

May 6, 2007 by

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Single system image clusters: an idea whose time has come and gone?

At one time, applications were constructed as a monolithic mass of code that implemented all of the functions required to implement a complete solution including user interface (if it faced users), application processing, data management and storage management.  Some of the more sophisticated applications also included tools for application management and security.

April 30, 2007 by

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Clusters, clusters and more clusters

Even though there are several different technologies involved and several different types of requirements, it now appears that any mulit-machine configuration is called a cluster. Here's a quick summary of the different configurations that are now using the same IT jargon term "Cluster".

April 29, 2007 by

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