If you plan on doing a live migration from ESX(i) 4.1 to ESXi 5 you need to create an ESXi 5 image that includes the N1K VEM bits.
It's not difficult as long as you have the right tools, steps, and files. This is just a quick quide on how to create an ESXi 5 upgrade image with the Nexus 1000v VEM bits included. Please check out the official documentation. The intent here is to show where to get the actual offline bundles from and how to create the image using PowerCLI.
First you need the following
ESXi offline bundle file (VMware-ESXi-5.0.0-469512-depot.zip) used to create and upgrade image (available from VMware)
VEM offline file (VEM500-201108271.zip) that gets combined with above ESXi offline bundle to create an upgrade ISO
The offline bundle is part of the VMware ESXi 5.0 Installable.
Nexus 1000v VEM offline bundle
Lastly you need the Nexus 1000V 1.4a zip file available for download from Cisco.com
You need to expand the zip file and pull out the VEM offline bundle.
Make sure to grab the VEM500*.zip file thats the bundle for ESXi 5. Copy the ESXi and VEM offline bundles to the same host that you installed PowerCLI on. I stick them in C:\ So there is less typing
Create the Image
Start PowerCLI (it looks like a cmd prompt once it's running) and type in the below commands. Assuming you have the same versions of code you can cut and paste. Otherwise you will need to modify the ESXi and VEM build versions. The first 3 commands appear to be optional depending on what version of PowerCLI you have. I still add them but if you get an error message when you type the command in don't worry about it.
So what we are doing is loading the ESXi and VEM offline bundles into the PowerCLI image builder. Cloning the standard ESXi5 image. Adding the VEM bits to that image and finally exporting it to an ISO file that can be uploaded into VMware Update Manager to do an upgrade.
Pretty simple once you know where everything is and how it works.
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