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Meph79
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ESXi 7.0.3i - Snapshot delete failed - Out of diskspace

One of our largest VMguests had a snapshot created and then the technician forgot about the snapshot. I found out and tried to delete it only problem is we ran out of space on the datastore. 

The VMguest recide on direct storage and my thought was to move the snapshot to another datastore (iSCSI).. I have searched for articles about this for 2 days now and cannot find any that fits my issue.. The only articles i find is about changing workdir for future snapshots (have tried this for fun and it does work in my test env).. 

When i tried the Delete-All snapshots the datastore had a little more than 6TB free so i thought it would be ok since the snapshot size is 3.3TB.. But now the datastore is completly full and the process failed at 59% .. Now i cannot see the snapshot anymore in the Snapshot Manager but i get the message:
"This virtual machine needs to have its disk consolidated" .. 

Any suggestions how to proceed? I cannot clone it or export it to another datastore since i do not have any with that size available. Thats why i was thinking to move the snapshot to iSCSI storage and then try consolidate.. Is it possible?

Running ESXi 7.0 U3i 
Guest OS has a thin disk with 10.95TB configured.
Local Datastore has capacity of 12.97TB
Snapshot is 3.3TB 
All other machines and ISO files has been moved away from the host. 

ls -lisa:
109052164 3522483200 -rw------- 1 root root 3623893360640 May 13 09:30 Guest1-000001-sesparse.vmdk
113246212 10273060864 -rw-r--r-- 1 root root 12043088297984 May 12 07:26 Guest1-flat.vmdk

df -h
Filesystem Size Used Available Use% Mounted on
VMFS-6 13.0T 12.9T 126.7G 99% /vmfs/volumes/datastore1

 

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