Tag Archives: ESX

Atlantis ILIO Pimps Virtualized Citrix XenApp: who needs VDI?

DesktopVirtualizationAtlantis rightly herald ILIO for XenApp, the first solution designed specifically to accelerate provisioning, boot time and application response time for virtualized Citrix XenApp deployments into a market that some would say is quite specific.

Atlantis have evidenced reducing provisioning time, improving the user experience and reducing the amount of storage required by up to 90% for Terminal Services/Microsoft RDS workloads.

Way back in the day the Atlantis ILIO offering had some difficulties, but recent releases for both ESX and Hyper-V have seen ILIO become a common component in VDI delivery. Yet, a Presentation Virtualisation (PV) solution like Citrix XenApp is a different environment, often managed and licensed in a different way: and there is ever the question – should you virtualize XenApp? The claims on performance and density when Atlantis ILIO for XenApp is used are compelling, so will this release give a fresh impetus to virtualising RDS workloads and help with the migration to Citrix XenApp 6.5?

Continue reading Atlantis ILIO Pimps Virtualized Citrix XenApp: who needs VDI?

The Speed of Change

The speed at which technology changes is absolutely amazing in that as soon as you buy something, the next faster, bigger model comes out.  I think back to when I started my career and remember a workstation that I was using with a 200MHz processor and I was really thrilled when I got it bumped up to 64MB of ram.   Now, although the hardware was changing at blazing speeds, you used to know you had a three to five year run with the operating system before you had to worry about upgrading and refreshing the operating systems. VMware has been changing the rules the last few years on major releases coming out, every two years.  Continue reading The Speed of Change

Host Only Supports 1 vCPU: Licensing?

I had a fun day resolving a licensing issue for a client.  This one was a little different than I had seen in the past.  The cluster in question is an eight node cluster running ESX 3.5.  The error message that I received when trying to perform a vMotion was “Unable to migrate from HostA to HostB: Virtual machine has 2 virtual CPUs, but the host only supports 1.  The number of virtual CPU’s may be limited by the guest OS selected for the virtual machine or by the licensing for the host.”

At first, I thought this might be an issue with the virtual machine being a 64bit Windows 2008 virtual machine with multiple virtual CPU’s.  After further review of the environment I discovered this issue was happening with all multi-processor virtual machines.  I also discovered that this issue was happening on six of the eight hosts in the cluster. Continue reading Host Only Supports 1 vCPU: Licensing?

How Many VM’s Can I Run?

I saw a question get posted on twitter that kind of intrigues me a little.  The question was pretty straight forward. “How many virtual machines should I be able to run on a host?”   That is really a fair question in itself but what I find intriguing is that this is the first question he asks.  Is this really the first thing administrators think to ask when designing their environment?   After all there is no set formula on how many virtual machines you can run on a host.  You can be a little more exact when working with VDI because for the most part all the virtual machines would be set up pretty much the same way and the numbers can be a little more predictable.  That would not be the case when working with server virtualization.  You are going to have servers all with different configurations and amount of resources provisioned to the virtual machines.  This variation is what will change your slot count and the amount of virtual machines you can run on the host. Continue reading How Many VM’s Can I Run?

VMware, Novell and the CVP

There has been a lot of noise about a negotiations between VMware and Novell, rumors are that it regards the purchase of the SUSE division,  now firstly every thing that follows is pure supposition on my part, I have no insider knowledge.  A fellow analyst, Mike Norman, has put forward one argument on why a VMware purchase of Novell SUSE assets makes  good corporate sense,  however I would like put another idea into the fray.
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