Upgrade to vSphere 5.5 – Part 2 – Upgrading a stand-alone host

Written by Pawel Lakomski on Grudzień 2nd, 2013

1. Introduction
2. Upgrading a stand-alone host
3. Upgrading vCenter Server with Simple Install
4. Upgrading vCenter Server components manualy
5. Upgrading hosts with Update Manager and vCenter Server 5.5
6. Upgrading virtual machines

Stand-alone host upgrade process is straightforward and easy:

1. Make sure your hardware is on VMware Hardware Conpatibility List.
2. Download ESXi 5.5 iso and burn it or mount it to your system.
3. Boot your server from the iso.

In the example I am upgrading from ESXi 5.1. The installed will now start loading modules and services.

You will be presented with the information about support:

and the license agreement:

The installer will find an existing VMFS partition with an existing installation for upgrade. Select it.

You will be asked wherever to upgrade ESXi or overwrite the existing installation and wherverer to preserver the existing VMFS partiotion. Select ‘Upgrade’ option:

And a final confirmation of the upgrade to be performed:

After a shrot time ESXi will upgrade to version 5.5 and will require a reboot.

After it boots, ESXi 5.1 to 5.5 upgrade is finished and the server is ready.


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