Virtualization and Cloud

Jonathan Gershater

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Latest Articles from Jonathan Gershater
BigData (and Hadoop) are buzzword and growth areas of computing; this article will distill the concepts into easy-to-understand terms. As the name implies, BigData is literally "big data" or "lots of data" that needs to be processed. Lets take a simple example: the city council of San...
Following my introduction to Infrastructure as a Service (IaaS), I published a review Microsoft Azure IaaS on the WindowsITPro website here: http://windowsitpro.com/windows-azure/overview-windows-azure-infrastructure-service My article is also currently appearing on the main Windows ...
Following my high-level write-up of Hadoop and Big Data, this article will present each of the components or projects that make up Hadoop with a technical description of each. First, what is Hadoop? Hadoop stores and processes large volumes of a wide variety of data that changes rapi...
OpenStack is an Infrastructure as a Service offering. (see my prior post for an explanation of IaaS). OpenStack is an OpenSource project, founded by RackSpace, NASA and others. OpenStack can be deployed as a public or private cloud. Project NOVA, or OpenStack Compute, provisions and...
OpenStack is an OpenSource offering of Infrastructure as a Service (IaaS). For a review, here is a quick overview of IaaS and OpenStack. OpenStack is admittedly not trivial to manually install. I have started a manual install beginning with the Identity Service (keystone) here, other ...
This article is a summary of a seminar I attended on the key to an engaging presentation. Following up on my prior article, how to deliver effective demos, here are some guidelines how to deliver effective presentations. This is a summary of an excellent seminar I attended, given by T...
Have you ever been invited to present a product solution and within a few minutes the audience is thumbing on their mobile devices? Have you ever presented to a remote audience and asked the end "any questions?" and there are none? Here are some tips for giving a great demo. (Credit ...
Migrating from VLANs to the public cloud is not trivial. So public cloud adoption should be a no-brainer, right? Oh wait, but Andy omitted security in the public cloud - how can I trust that my customers' sensitive data is secure in the public cloud? I agree, the message wears thin t...
Eucalyptus is an open source Infrastructure as a Service cloud offering. What is unique about Eucalyptus is that it is compatible with Amazon AWS APIs. Eucalyptus leverages operating system virtualization, such as KVM or XEN, to achieve isolation between applications and stacks. Oper...
To learn more about Cloud IaaS offerings, I painlessly setup Cloudstack, from Citrix, on two (outdated and defunct) DELL Optiplex 740 desktop computers. Each desktop is configured with 8GB of memory and the processors are VT compatible (meaning they can run virtualization technology s...
A first-degree direct LinkedIn connection implies that the two parties know each well. Using this assumption two disconnected LinkedIn users, attempt to connect via an intermediary. What often turns out, is that the first degree connections are in fact very weak connections, and thus ...