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kharvatis
Contributor
Contributor

CBT --cannot enable

Hi all!

I've recently set up an ESXi 7.0 system to migrate from my old 6.0.

The 6.0 seems to had had CBT enabled by default for all VMs, whereas 7.0 does not. I am trying to enable it following the KB https://kb.vmware.com/s/article/1020128 (testing on a small 7.0U2 VM so far), but I am failing.

ctkEnabled=TRUE

scsi0:0.ctkEnabled=TRUE

First parameter is not saved at all. I am not sure if it's valid or not. Second parameter is indeed saved, but backup software (Synology) still replies that CBT is not enabled. Is there a way out of this?

 

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virtsysadmin
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What is the ESXi and VC buld, please check the relese notes for known issue with the spesific build. Beacuse it's the smae on 7.0 - https://kb.vmware.com/s/article/1020128



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virtsysadmin
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What is the ESXi and VC build, please check the release notes for a known issue with the specific build. Because it's the same at 7.0

- https://kb.vmware.com/s/article/1020128



I am a VMware employee, But I contribute to VMTN voluntarily (ie. not in any official capacity)
VCIX-DCV 2020|CKA|VCP|VCP vSphere 7|MCTS|RHCA|CCNA|ITIL| Master Specialist - VMware Cloud on AWS 2021
Please hit resolved, when your question has been answered.
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kharvatis
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@virtsysadminthank you for prompt reply. However, that KB article does not give further info. It also includes a link to itself(!)

 

Synology offers the same instructions, probably just copied from VMWare https://kb.synology.com/en-br/DSM/tutorial/How_to_enable_CBT_manually_for_a_virtual_machine

 

VM in question  has only one vmdk, and a ...-ctk.vmdk file has also appeared in its folder. No snapshots of course.  Still, CBT is not enabled.

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