Vmware CBT restore in Netbackup ?

[Michael_G_Ander]

It this a feature people could/would use if available ?

Seems to be a function in the vmware api, where only the changed is moved in a restore which of course makes it faster than a traditional restore.

Personally I have mostly restored either single files/folders or full VMs, when the VM had either been deleted or was unusable for some reason.

Thinking there might be some caveats, since Sýmantec/Veritas hasn't implemented the feature already

[Nicolai]

There would nee to be a "do not use CBT for restore" option, in case the data on the VM is corrupt or unkown state. Vmotion also reset the CBT log.

[Marianne]

All I can find on VMware website is that CBT should be disabled for SAN transport:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=103509...

[sdo]

I think that VMware article is aimed at developers/programmers/third-party who make use of calls to the VDDK API for VADP.  So, where it says "Changed Block Tracking (CBT) must be disabled for SAN restores.", this is an instruction to programmers to make sure that CBT is de-activated during their restore code/routines.

i.e. IMO, it is not an instruction to backup admins that "CBT should be disabled for SAN transport".

[Michael_G_Ander]

@Nicolai,  yes or an active choice of the CBT restore function

@Marianne, seems mostly to be mentioned in the VDP documentation and the Virtual Disk Programming guide. (Got 100+ hits when searching on cbt restore/recover on the vmware site) Didn't find the one explaining the CBT restore in detail ..yet