Which one? Data Volume, LUN presented as raw disk to HyperV V SQL VM
-How was the latency detected? It was detected through SQL Logs
- on Application/Windows
- Latency during READ/Write operation to SQL LUN
Also please follow https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/ONTAP_9_Performance_-_Resolution_Guide
Can you clarify your question and provide some details?
Did you have a chance to check the kb shared by paul? @sfrmast