The Virtualization Practice

Application Virtualization

Application Virtualization covers application layering and application delivery approaches like streaming applications, and local application virtualization. Infrastructure as a Service focuses upon isolating the operating system from its underlying hardware and allowing multiple instances of operating systems to share that underlying hardware. Application Virtualization focuses upon isolating application from their underlying operating systems. ...
This make it unnecessary to install applications into operating systems, makes it easier to update new versions of applications, and breaks the dependencies between versions of applications and the specific versions of operating systems. Popular application virtualization offerings include Microsoft App-V, VMware ThinApp, and the XenApp Plugin for Hosted and Streaming applications.

Java based applications can now be moved between not only a SpringSource TC-Server Java platform on VMware vSphere, but also between the same platform on VMForce, and now Google AppEngine. This level of support from VMware, Salesforce.com, and now Google is starting to make SpringSource look like the early leading technology for PaaS Clouds. This is a significant advance in the state of PaaS clouds as there were previously no examples that offered such broad support for one platform by such a diverse set of industry leaders. However as is always the case, platform advances have outstripped security, management and performance assurance capabilities.

Virtualize Java without an Operating System

When we put a .NET application on Windows on Hyper-V (or a Java application on Linux on ESXi) we are actually virtualizing twice. Can we virtualize only once, by putting the CLR or the JVM directly on the VM Host? In this action of course we remove the operating system. Oracle is taking the lead in this area with JRockit VE JVM. There is no VMware support, the only hypervisor it supports is Xen, or more precisely Oracle VM. it only comes bundled only with an Application Server, namely Oracle WebLogic Suite Virtualization Option. The entire stack inside the virtual machine is in “User Mode” in other words the JVM and the drivers are all in the same memory address space and you don’t need to switch contexts into Kernel Mode in order to perform I/O or network access. Does VMware have a strategic initiative (or even a skunkworks) to engineer a similar bundle for its SpringSource runtimes? Or are they just concentrating on scaling out with as per the Google announcement?

VMware will offer enterprises a very inexpensive Java run time platform that is tuned to virtualization, that facilitates very rapid deployment of Java applications into a virtualized environment, and that offers applications portability between VMware TC-Server run time environments and Java PAAS clouds like VMforce. This may well prove to be an irresistible combination to enterprises that are used to paying millions of dollars to Oracle and IBM for an equivalent platform that is harder to manage.

Does an evaluation for a virtualisation project need to be only an exercise in understanding if X hosts will on Y servers? Will you be able to to virtualize every service you deliver? Are new applications required? What are your existing service-levels and requirements across your application portfolio? In most enterprises today, IT is a cost centre not a profit centre. Business units often want detailed involvement in implementation plans, asset purchases and ownership: it is not unusual that requests for applications come in terms of functionality – not in terms of service levels. With their release of Workspace iQ, Centrix Software appear to be unique in endeavouring to aggregate information that can be used to deliver data that can help provide IT with improved costing information without relying on specific vendors solutions to be in place.

Let’s start this analysis with a basic question. Is there any rational reason for VMware and Citrix to make peace with each other, and develop the desktop virtualization market in concert with one another instead of in competition with each other? In other words if Citrix were to add its value to the core pieces of VMware View, would this be a good thing or a bad thing?

Whilst new SMBs may be dabbling with online application suites, the bulk of the established SMB workload, however, is done in desktop applications, typically Microsoft Office, running in various flavours of Windows with a Windows Server. This is definitely not in the cloud, and there are lots of very good reasons why it won’t be, and less radical solutions are likely to offer more benefit.