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I want to convert an VMDK disk THICK into THIN...when i click in the Virtual machine with right button it should Appear MIGRATE option but it dont appear...someone know other method to conver HDD THICK in THIN

Thanks a lot

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Does the migrate option appear under commands? Where Power off, Suspend, reset, etc appears? – Rudolph Sep 9 '14 at 6:10

You can use the vmkfstools to convert disk format from thick to thin. From the ESX/ESXi terminal you can change vmdk format with the following command:

vmkfstools -i vm01_1-flat.vmdk -d thin vm01THIN.vmdk

There is a detailed article on the topic http://networklessons.com/vmware/convert-vmware-esxi-thick-provisioned-disk-to-thin/

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