Upgrading ESX 4.0 to ESX 4.1 with Update Manager

This turned out to be so ridiculously easy I probably shouldn’t even mention it, but only because I remembered that Update Manager exists. I thought I was going to have to burn an ISO, go to the datacenter, pop the disc in, etc. But with Update Manager this is all handled remotely. Just download the files from vmware.com and upload them to your vCenter server through the client. This YouTube video by VMware walks you through the procedure:

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Migrating vCenter 4.0 to 4.1 (part 1)

When vSphere 4.1 was released earlier this year, I was mildly excited. Our ESX servers are still running 4.0.0 and I had been planning to upgrade to 4.0u1 for a while. When 4.1 came out it seemed to have vindicated my procrastination: now I could just upgrade to 4.1 and take advantage of whatever new features there were (I read something about memory compression… whatever).
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