ESX / ESXi 3.5 Update 4 Released

Yesterday, VMware announced the availability of ESX / ESXi 3.5 Update 4 (build number 153875). As usual you can view the release notes for all of the juicy details but in summary they are: Support for the Xeon processor 5500 series QLogic Fibre Channel Adapter Driver Update An updated version of the VMXNET driver (VMXNET enhanced) for Windows 2003 / XP Support for new Guest OSs: – SUSE Enterprise Desktop / Server 11 – Ubuntu Desktop / Server 8.10 – Windows Preinstallation Environment 2.0 Newly supported IO devices / Network Interfaces (see the release notes for a full list) A reasonable number…

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HA Agent on ESX-HOST in cluster CLUSTER-NAME has an error

If I wanted to, this could be a very big post all about configuring HA correctly. But I don't want to reinvent the wheel. Instead I just want to share my experiences with this error: HA Agent on ESX-HOST in cluster CLUSTER-NAME has an error Odds are that you will eventually see this one pop up in vCenter for one of your ESX 3.x hosts. If you're not sure what it means, well the translation basically is that the host displaying the error could fail and your VMs running on it probably won't get started up automatically on another…

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Communication with the virtual machine may have been interrupted

I was trying to power up a new VM on an ESX 3.5 host just now and I got the following error: “A general system error ocurred: The system returned an error. Communication with the virtual machine may have been interrupted” Nice and helpful! It appears that there are two ways to fix this. The first is to reboot your ESX host. Of course this isn't normally practical and you may have VMs running. The alternative is to make your way into the service console and issue the following command: service mgmt-vmware restart Assuming that no errors…

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Beginning with Storage vMotion

Storage vMotion was introduced with ESX 3.5 about a year ago but for various reasons I've never had the opportunity or need to use it until now. The project that required its use has been knocking around for a few months now. It started as a single ESX server that was to be used to build a small number of VMs for use by my customer as an HR system. Three months or so after putting in that first host I was finally called back to add another and setup VirtualCenter. Installing ESX, VC and doing all of the…

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