How to upgrade ESX4.0/ESX4.1/ESXi4.0/ESXi4.1 to ESXi5.1/ESXi5.5 versions

Hi guys -.

I want to update my old boxes ESX/ESXi versions ESXi5.X. Is this possible without having to reinstall ESXi5.X on the host? I've never done this before activity, please suggest. Also if I have a DRS HA enabled on these devices, should I take precautions. Thank you very much.

Kind regards

Could you please suggest how should I go with the upgrades?

Use interactive Setup, look at: upgrade to VMware ESXi 5.5 using the Interactive Setup program. Insider - Articles from VMware VMware support

Tags: VMware

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