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Maximum vSphere™: Tips, How-Tos, and Best Practices for Working with VMware vSphere™ 4 by Simon Seagrave, Eric Siebert

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12. Upgrading to vSphere

If you have an existing VI3 environment, at some point you’ll probably want to upgrade it to vSphere. Before jumping right into the upgrade process, though, there are many considerations and requirements that you should be aware of. Once you are aware of everything you need to know, you should then put together a plan for how you are going to proceed. Upgrading to vSphere is fairly straightforward, but there are many gotchas that can make the process more difficult. To avoid surprises during the upgrade, you should properly prepare and know all the steps so that your upgrade is trouble-free and uneventful. In this chapter, we will cover considerations and steps for upgrading your existing virtual environment to vSphere. ...

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