backup to disk : mminfo -m -q volume=B2D different df -k /b2d

Check if all that you have on disk is NW data.

It's ok, it's only NW data.
Is it possible to be a bug ?

Well, this is disk volume so perhaps you use SW compression.

You can easily list all savesets for that volume along with their size, sum it up and it will give you an answer to your question.

But I have seen this before and as far as I see it it's kind of cosmetic issue.

Hi Julien,

mminfo always tells you who many bytes NetWorker wrote on a device/volume since it was last labled.

That is different to the number of bytes aktually stored in your file device.

Try to check with summery over all save sets you can find on the adv_file device.

I think its normal, because save sets will be deleted after retention