Just noticed the fact that our backup software (EMC Networker) does not support backing up of btrfs filesystems.
HP Dataprotector or TSM appear to be more advanced in this respect.

As BTRFS is the default choice for the system install from SLES12 on, anyone running client based backups need to consider btrfs support in their backup solution.

For us, a second line of data protection (VDP) will ensure current OS backups for SLES VMs.

Users of EMC Networker are welcome to submit enhancement requests.

Regards, Tom