CBT for VMs running on NFS

[kwg66]

Hey now!    With HCI coming at everyone now over the past few years, we are finally ready to adopt and have selected a solution.   However, along with this transition to HCI comes a transition from VMFS to NFS.    I know that CBT is supported for VMs running on NFS, and this is confirmed in https://kb.vmware.com/s/article/1020128.  

HOWEVER - I see a tibbit in the VMware KB above that states the following:

"For CBT to identify disk sectors in use with the special "*" change ID, these items are required:

• The virtual disk must be located on a VMFS volume, backed by SAN, iSCSI, or local disk."

I do not know what the impact of this is and I would like someone with a deeper understanding of this statement to provide some clarity.   

CBT is supported on NFS, but not the ability to identify disk sectors in use with a special character (*) change ID?    

What am I losing here?

Thanks in advance

[daphnissov]

You can read more about that here. In short, it's probably not something you need to worry about unless you've monkied with changeId directly.

[kwg66]

Good read.. I can't recall ever getting this much of a deep dive into CBT and backup operations..