Change Block Tracking settings not retained for a VM on VMWare 5.5

Posted by Chris on Server Fault See other posts from Server Fault or by Chris
Published on 2014-05-22T18:37:23Z Indexed on 2014/05/26 21:32 UTC
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vmware-esx

I'm trying to enable Change Block Tracking as per this VMWare KB article but the setting ctkEnabled is not being retained in the advanced options or being added to the vmx file.
The setting scsi0:0.ctkEnabled is being retained and I see a file vmname-ctk.vmdk in the datastore. I've verified that the vm doesn't have any snapshots but don't see any other suggestions in the KB (or google, of course.)

Edit:

The last comment on this community post. It's a slightly different circumstance, but suggests that there is an known bug editing these settings in the web-gui.

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