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How to change a VMware ESX host’s name

From time to time you may have a requirement to rename a VMware ESX host, although this is quite straight forward to do in ESXi via the Direct Console User Interface (DCUI) there are a few more steps...

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VMware ESX & ESXi Error – Can’t boot system as genuine NUMA

When running a virtualized instance of ESX/ESXi 4.0 Update 1 from within VMware Fusion or VMware Workstation you may notice the following error message on the front ESX/ESXi screen: “NUMA: 706: Can’t...

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Running VMware vSphere 4.1 on a MacBook Pro with dual disks (incl SSD)

I’ve been using my Intel i7  MacBook Pro daily for work and then during the evening for the past couple of months and have found it, on the whole, pretty good.  I bought my MacBook Pro with a 5400rpm...

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Fix: VMware vSphere Client – Error 1406. Could not write value

During the upgrade or installation process of the VMware vSphere Client you may find yourself presented with the following error message, “Error 1406. Could not write value …”. As with most...

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“The operation is not supported on the object” – vSphere vApp Deployment Error

When going to deploy a VMware vSphere OVA based vApp package you may receive the following vague error message: “The OVF package is invalid and cannot be deployed” along with “The operation is not...

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VMware vCenter Server 5.0 & MS SQL Server ODBC

In my vSphere lab environment I like to try and run things as closely as possible to how it would be run in the “real world”.  Of course this isn’t always possible due to hardware and budget...

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Longmode is disabled for this virtual machine – VMware vSphere

A TechHead reader recently experienced the following message in VMware vSphere (ESXi) when trying to start a 64-bit VM (Windows 2008 R2) running on their HP Proliant ML110 G5: “This virtual machine is...

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Hardware Virtualization is not a feature of the CPU –Nested VMware ESXi

When installing a virtualized instance of VMware ESXi 5 on top of a physical ESXi 5 instance you may receive the following warning message: <HARDWARE_VIRTUALIZATION WARNING: Hardware Virtualization...

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Deploying VMware ESXi on your HP MicroServer automatically with Razor

Razor is a cool new deployment tool for your entire server infrastructure. It’s has been and is still being developed as a joint venture between EMC and Puppetlabs (who also make the amazing open...

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"Cannot change the host configuration" error message when adding disk storage...

Experiencing the “Cannot change the host configuration” and or Call “HostDatastoreSystem.QueryVmfsDatastoreCreateOptions” for object “datastoreSystem-xxxx” on vCenter Server error message when trying...

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