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Guest operating system’s memory usage might be overestimated on VMware ESX 4
After installing or upgrading to VMware ESX 4, the Guest operating system’s memory usage might be overestimated on Intel systems that support EPT technology or AMD systems that support RVI technology. This issue might cause the memory alarms in vCenter to go off spuriously even if the guest is not actively accessing a lot of…
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Running vCenter in a virtual machine within a distributed switch is not supported
Update: This post has been updated on Feb 23, 2011 as I have been kicked right and left by my colleagues at VMware, as this post used to be titled “Running vCenter in a virtual machine within a distributed switch is not supported”, where its actually supported. Unfortunately, this info was communicated to me by…
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Configured DSN is pointing to an unsupported ODBC driver error while upgrading to vCenter 4.0
One of the errors my customers repeatly complain about while upgrading to vCenter Server 4 or even when trying to install it from scratch is the following error: “The DSN is pointing to an unsupported ODBC driver. Please re-configure your DSN to use one of the supported drivers.” If you face this problem the first…
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Another Secret reason why you should purchase VMware Storage VMotion
As most of you already know VMware Storage VMotion is the ability to live migrate a virtual machine from one storage to another without any downtime. The usage most IT Professional relate to VMware Storage VMotion is the following: The ability to move your virtual machines from a storage or datastore to another for maintenance…
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VMware ESX 4 Reclaiming Thin Provisioned disk Unused Space
Disk Thin Provisioning & its ease of use in VMware vSphere has been one of the most used features. Although Thin provisioning has allowed customers to avoid allocating space upfront & saved them tons of space, it does not unallocate space when files are deleted from the Virtual Machine, this is due to the way…
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IF I was VMware CEO, ……
Don’t get me wrong. I am happy with the current VMware CEO as well the VMware team as over all. My post is more of a message to the VMware Team & specially the CEO. I believe this below tip can help VMware crush the competition, though they have to study it carefully as it…
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VMware vSphere Virtual Machine still show old datastore after storage vMotion
Before I start with the article, I have to point out this is not a VMware bug. Its the VMware admins doing what they are not suppose to do. VMware ESX 3 & VMware ESX 4 Administration Guides mention clearly that you should not VMotion or Storage vMotion a Virtual machine before disconnecting it from…
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Sony VAIO laptops disabled Intel VT
This article title say “Sony VAIO laptops disabled Intel VT“, but what should that mean to you. It should mean the world to a lot of us. It should mean think twice trice before you buy a Sony VAIO laptop, due to the amount of limitation that come with disabling Intel VT. Ok, let’s see…
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vCenter Server linked Mode. Error 28039. Setup cannot join vCenter Server to the linked mode group
vSphere Virtual Center Linked Mode Prerequisites: Well, yes this article has two headers or titles. Guess what they are almost identical. I have seen “Error 28039. Setup cannot join vCenter Server to the linked mode group” all over the net & without any one posting resolution for it. hmmmm, how did I find out about…
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VMware vSphere – VMware vNetwork Distributed Switch bug or limitation
Many of you have already heard about the new VMware vNetwork Distributed switch. It has been a really great innovation by VMware. I believe most of us has already learned something about its benefit like: 1- Simplify Virtual Machine Networking: As you get to create one switch per cluster & create the policy across all…
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How to enable VMware EVC on VMware vSphere & VI3 without downtime
If you don’t know what is VMware EVC or you need to find out more about it, please look at my last post VMware EVC enhanced VMotion Compatibility enable VMware VMotion across CPU generations Ok, if you had read that and now wondering how to get it setup without having to shutdown your virtual machines.…
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VMware EVC (Enhanced VMotion Compatibility) enable VMware VMotion across CPU generations
Everyone who had been using VMware for a while, would appreciate VMware VMotion. Actually VMware VMotion have always been a distinguished feature of VMware ESX servers. Despite of VMotion has always been a great feature, people using it at earlier stages used to have a tough time when having to use it across different CPU generation. That meant companies had…
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VMware vSphere does not support VMware SRM & VMware View
It had been asked so often lately, if VMware vSphere support SRM & VMware View yet. I had even got calls from customers who tried to integrate the two together. The VMware statement is quite clear in this regard, both VMware Site Recovery Manager(SRM) & VMware View are not supported yet by VMWare vSphere 4.0.…