numIOs sizes

Hi Folks.

I'm starting to play with VDP... (6.1.2)

I'm backing up a large VM, and as experienced by everyone, the vSphere Client shows 92%.

Looking at the logs, I can see that progress is being made, and the numIOs values go up...  My question is, how can I find out what size these IO's are?  I understand that they are variable length, but I would like to get an idea of the progress of the backup...

Thanks