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NFS vs iSCSI reliability on Cinder Backend???

Hello.

 

I run Netapp FAS8040 for Openstack Cinder Backend based on iSCSI protocol.

 

But iSCSI sometimes occur some problems like multipath issues.

So Netapp saids chaging backend protocol iSCSI -> NFS.

Because NFS is simple and easy to manage + some features are better than iSCSI.

 

But someone say that iSCSI is more reliable than NFS.

In their opinion, Cinder Backend based on iSCSI causes VM level trouble.

On the other hand, Cinder Backend bases on NFS causes Hypevisor level trouble.

 

Whay do you think about this?

 

Thank you.