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An administrator needs to recover disk space on a previously-used thin provisioned virtual disk. The volumes
where the administrator needs to recover the disk blocks are on VAAI-compliant storage arrays.
Which two actions should the administrator take accomplish this task? (Choose two.)

A.
Perform a Storage vMotion to another volume in order to force free space recovery to occur. This recreates
the volume in a new location and recovers all unused space.

B.
Use VMware Converter to migrate the virtual machine to a new datastore. This will recreate the volumes
and recover all unused space.

C.
Issue the vmkfstools -vmfs unmap command within the VMFS volume directory on the ESXi host console.

D.
Execute the esxcli storage vmfs unmap command.

Explanation:

Reference: http://www.boche.net/blog/index.php/2013/09/13/vsphere-5-5-unmap-deep-dive/

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