40 GBcrap
the ESXi shell is crap and don't support the "-s" (sprase) option other than a Linux on as exmaple a NFS server hosting thin provisioned disks - oh an beware using the "Mv" command to move a thin provisioned disk between datastores - you end with a full-sized and probably a full filesystem
look at the first column (CentOS7)
[root@nfs:/nfs/z-recovery]$ /bin/ls -l -h -s
total 236G
0 -rw------- 1 vcenter vcenter 112M Feb 23 15:55 vmx-z-recovery-4010527134-1.vswp
74G -rw------- 1 vcenter vcenter 256G Feb 23 16:35 z-recovery_1-flat.vmdk
4.0K -rw------- 1 vcenter vcenter 502 Feb 23 15:56 z-recovery_1.vmdk
74G -rw------- 1 vcenter vcenter 256G Feb 23 16:21 z-recovery_2-flat.vmdk
4.0K -rw------- 1 vcenter vcenter 502 Feb 23 15:56 z-recovery_2.vmdk
74G -rw------- 1 vcenter vcenter 256G Feb 23 16:21 z-recovery_3-flat.vmdk
4.0K -rw------- 1 vcenter vcenter 502 Feb 23 15:56 z-recovery_3.vmdk
0 -rw------- 1 vcenter vcenter 5.0G Feb 23 15:55 z-recovery-ef0bc99e.vswp
16G -rw------- 1 vcenter vcenter 200G Feb 23 16:35 z-recovery-flat.vmdk
12K -rw------- 1 vcenter vcenter 8.5K Feb 23 16:35 z-recovery.nvram
4.0K -rw------- 1 vcenter vcenter 523 Feb 23 15:56 z-recovery.vmdk
0 -rw-r--r-- 1 vcenter vcenter 0 Feb 16 05:20 z-recovery.vmsd
8.0K -rwxr-xr-x 1 vcenter vcenter 4.7K Feb 23 16:04 z-recovery.vmx
4.0K -rw-r--r-- 1 vcenter vcenter 3.3K Feb 23 16:17 z-recovery.vmxf
0 -rw------- 1 vcenter vcenter 0 Feb 23 15:55 z-recovery.vmx.lck