vVol and CBT

[nmcardoso]

Hi,

I want to migrate my VMs with storage vMotion from an iSCSI Datastore to a new vvol Datastore and enable CBT.

My question is: Should I enable CBT before or after the vMotion? And can I enable CBT without bringing the VMs down?
Thanks

[daphnissov]

CBT is enabled automatically so there's nothing for you to do. Since you're considering VVols, please read this KB article and ensure your hosts are patched up past this level.

[nmcardoso]

Hi,

Thank you for your answer, it's very appreciated. What do you mean by:

CBT is enabled automatically so there's nothing for you to do

If the VMs have CBT disabled I still have to enable it!?

Thanks

[daphnissov]

Have you manually disabled CBT on these VMs or something? Otherwise, CBT is enabled when a VADP-based backup is begun.

[nmcardoso]

I have inherited this system from another admin, so I am not sure. I think the VMs have never been taken in backup by VADP-based backup. But they will be since we are planning to deploy Commvault once the VMs are migrated to the new storage array.

When I look a the Configuration Parameters of the VMs only 2 out of 70 have the ctkEnabled entry set to "TRUE".

[daphnissov]

CBT is enabled like I said. There's nothing left you need to do.

[nmcardoso]

OK. Thank you for your help.

Regards,