Diskstation ISCSI Volume filling up?

[nitrobass24]

I have an interesting problem, the disk space started to fill up over 75% on one of my iSCSI LUNs so i went through and deleted checkpoints, compacted VHDs, etc.

Now if I go onto my host and get the file size of my VMs it totals about 120GB. However, on my Diskstation, the LUN is showing its over 200GB.

Why is this diskspace not being reclaimed?

 

[Dev_Mgr]

If your volume is thin provisioned, deleting data doesn't shrink it unless you unmap the cleared sectors. In VMware you can do this at the command line. For Windows this may be possible as well, but it depends on the Windows version (I think it was only introduced with 2012).

 

[sboesch]

Zero out the free space on your Windows box with SDelete.