How to take a snapshot backup of a SLES for SAP 15 SP1 on Power Hardware?

We have deployed a SUSE for SAP 15 SP1 on top of IBM power8 box lpar, and we are opting for Live internet based patching, Before patching as a precautionary measure we need to take a snapshot or system state backup of the machine(lpar).How to take a snapshot backup of a SLES for SAP 15 SP1 on Power Hardware?

Note:- In our env EMC networker FS level backup is in place.