How to Upgrade VMware ESXi 3.5 to ESXi 4.0

To upgrade from VMware ESXi 3.5 to VMware ESXi 4.0 you first need to install the VMware vSphere Host Update Utility:

1. VMware ESXI 4 upgrading release, and extract the file ESXi-4.0.0-0.4.164009-upgrade-release.zip\VMware-viclient.vib\data.tar.gz\data.tar\.\4.0.0\client\VMware-viclient.exe
2. Run the executable to install the VMware vSphere Client 4.0, be sure to select the Install vSphere Host Update Utility 4.0.
3. Run the vSphere Host Update Utility 4.0.
4. Select the server you wish to upgrade, then click Upgrade Host.
5. Select the VMware ESXi 4.0 Upgrade file (for example: ESXi-4.0.0-0.4.164009-upgrade-release.zip)
6. Run VMware vSphere client, login to the host you wish to upgrade. Right click on the server, and click Enter Maintenance Mode.
7. Return back to the vSphere Host Update Utility 4.0, and Accept the agreement.
8. Enter host login details, and click next.
9. Once this has been completed, go back to VMware vSphere client, and Exit Maintenance Mode.

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Filed under: Uncategorized by — aaron @ 4:59 pm