pepsichanhvn wrote:
Hi all,
If i checked enable zero detection, is my deleted space auto reclaim or i must have sdelete to reclaim that deleted space.
My storage is 3par 7400
Thank
It depends on how it is deleted. For Windows it needs to be cleared from the recycle bin.
If deleted on bare-metal Windows 2012 or later then unmap is sent and space is reclaimed.
If deleted on bare-metal Windows 2008 or earlier, then sdelete is required.
If deleted in Vmware on VMFS then esxcli unmap is required on VMFS5, for VMFS6 is sends unmap and space is reclaimed.
If deleted in a virtual machine using a VMDK it is reclaimed if the OS is writing zeros when deleting, however most OSes and filesystems only delete pointers and possibly send unmap command. For VMFS5 those unmap commands gets filtered out by Vmware. With VMFS6 and thin VMDK and thin VV on 3PAR the unmap commands is passed thru to the 3PAR and space is reclaimed.