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tring to upgrade esx 4.1 to esxi 5.1

Posted on 2013-06-20
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Last Modified: 2013-06-25
When I boot the host from the esxi 5.1 cd, I get the  3 options listed here:
Migrate ESX, preserve vmfs datastore
Install ESXI, preserver vmfs datastore
Install ESXi, overwrite vmfs datastore.

Now I want to keep the datastore intact so not to loose it so should I select the first option or the second option?
When I selected migrate ESX, it told me it was going to reparation the disk, which I don't want to loose the datastore...
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Question by:vmich
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Haresh Nikumbh earned 250 total points
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Force Migrate ESXi, Preserve VMFS Datastore: This will take your current installation and configuraiton and attempt an upgrade/migration and keep your VMFS Datastores intact, so your VMs will be preserved if things go wrong.

Install ESXi, Preserve VMFS Datastore: This will install a fresh copy of ESXi 5.0 and leave your VMFS datastores intact, this will erase all custom configurations, it's a clean slate basically and you will have to re-add your VMs back to your inventory once you have reconfigured your host server.

Install ESXi, Overwrite VMFS Datastore: This does exactly what it sounds, it will install a clean copy of ESXi 5.0 and overwrite your current datastores - you will LOOSE all information on that datastore.

Source:

http://www.howtoforge.com/upgrade-migrate-vmware-esx-esxi-4-to-esxi-5.0
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by:AbhishekJha
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by:vmich
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So then selecting the migrate ESX and preserver the vmfs datastore will keep all the vm's and such there correct?
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by:AbhishekJha
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Yes
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Do you have a Backup of your VMs before you proceed?
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by:vmich
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