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rescan the controller and/or refresh the VI Client.
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that makes no difference the size is still 60gb on the datastore.
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was this machines HDD any time filled up to close to 60Gb? 
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are you using NFS storage by chance?
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as bgoering said. if it was full one time even if the files were deleted vmware may not be able to see any clear white spaces. defrag and zero the emprty space and try.
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you could cat out the descriptor file to verify that the disk is actually supposed to be thin. &nbsp;It should have the line ddb.thinProvisioned = &quot;1&quot; within it. &nbsp;See <a href="http://virtualbox-provenpractice.blogspot.com/2009/04/thick-disk-to-thin-disk.html" rel="ugc">http://virtualbox-provenpractice.blogspot.com/2009/04/thick-disk-to-thin-disk.html</a>&nbsp;if you are unsure how to do this.
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You should not even have to defrag (though that is not a bad idea for other reasons) if all you want to do is recover the physical disk space. If you do decide to defrag, do it before zero the unused space otherwise you will have used space wherever defrag moved files or file fragments around.
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Thanks so much that solved my issue.
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I have a virtual server that was a 60gb thick disk. I used vmotion to move it to another datastore and changed it from thick to thin but its still 60gb on the datastore but inside the vm its only using 30gb of the 60gb disk. How can i get the vmdk to size down to just the used space like thin is suppose to work. This is on vmware ESX 4.0
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I have a virtual server that was a 60gb thick disk. I used vmotion to move it to another datastore and changed it from thick to thin but its still 60gb on the datastore but inside the vm its only using 30gb of the 60gb disk. How can i get the vmdk to size down to just the used space like thin is suppose to work. This is on vmware ESX 4.0

ESX Thick to Thin still same size

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Storage

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.

VMware

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).