Today we configured a new VLAN on the physical switches, now we need to configure a portgroup with vlan id on multiple ESX hosts in our cluster. To do this by hand it will cost 3 minutes per host, to script this.. you configure this in 10 seconds!
The script:
Get-Cluster “clustername” | Get-VMHost | Get-VirtualSwitch -Name “vSwitch0″ | New-VirtualPortGroup -Name “VLAN-23-Citrix Provisioning” -VLanId 23


Voila!
Last year we already posted about creating a bootable USB stick. In the last post we used WinImage to create the bootable USB stick to boot ESXi. Some time ago I found a tool which makes it much easier to create a bootable ESXi USB Stick. I am going to use UNetbootin to create bootable USB stick. You can download it here.
1. First connect the USB stick and start UNetbootin
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Known issue’s:
When attempting to upgrade ESX 4.0 to ESX 4.0 Update 1 (U1), you may experience these symptoms:
- Upgrade operation may fail or hang and can result in an incomplete installation
- Upon reboot, the host that was being upgraded may be left in an inconsistent state and may display a purple diagnostic screen with the following error:
COS Panic: Int3 @ mp_register_ioapic
To download the newest (re-released) Update 1 check url:
http://downloads.vmware.com/d/info/datacenter_downloads/vmware_vsphere_4/4
Symptoms:
Upgrading virtual hardware in ESX 4 may cause Windows 2008 disks to go offline.
Upgrading virtual hardware from version 4 to version 7 may cause Windows 2008 disks to go offline.
Creating a new virtual machine on hardware version 7 may cause Windows 2008 disks to go offline.
Note: The first disk (C: drive) is not affected. Any additional disks may be affected and show marked as Offline within Disk Management.
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What’s New
The following information provides highlights of some of the enhancements available in this release of VMware ESX:
VMware View 4.0 support – This release adds support for VMware View 4.0, a solution built specifically for delivering desktops as a managed service from the protocol to the platform.
Windows 7 and Windows 2008 R2 support –This release adds support for 32-bit and 64-bit versions of Windows 7 as well as 64-bit Windows 2008 R2 as guest OS platforms. In addition, the vSphere Client is now supported and can be installed on a Windows 7 platform. For a complete list of supported guest operating systems with this release, see the VMware Compatibility Guide.
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Details:
If you plan to use Windows 7 or Windows 2008 R2 as a guest operating system, do not use the SVGA drivers included with VMware Tools. Use the standard SVGA driver instead.
Symptoms:
Freeze
Hanging Console
High CPU
Reboots
Solution:
To deselect the SVGA drivers installed with VMware Tools:
- When you install VMware Tools, select VMware Tools Custom Install and deselect the SVGA driver.
Alternatively, remove the SVGA driver from the Device Manager after installing VMware Tools
Product Versions:
VMware ESX 4.0.x
VMware ESXi 4.0.x Installable
Source: KB 1011709