We never used NetApp because even the physical machines were crap. Terrible performance and reliability and super high cost. We had to abandon them because they would fail under load. Not cut out for storage duties.
This time, we tell the truth about ZFS pros and cons. We also cover why ZFS was never adopted by such industry-standard hypervisors as Hyper-V and vSphere
Because it isn't a clustered filesystem so didn't apply 🙂 That's an easy one to answer. Also, they couldn't license it.