You would need to backup the replica VMs to disk first and then offload their backup files to tapes
As for the tape drives, I can see the 920 one on our unofficial compatibility list
, which means that it was tested in the field with Veeam B&R and reported as compatible. As for the 448 one, it is not there yet, however as long as the correct drivers (OEM drivers from device manufacturer) are used and given drive is shown properly in Windows Device Manager under correct name (as opposed to generic device), it should work fine. If you test the device and report back to us that it does perform well in conjunction with Veeam B&R, we will add it to the list.