[CentOS] NFS vs SMb vs iSCSI for remote backup mounts

Rudi Ahlers wrote:
> let's keep the question simple. WHICH filesystem would be best for 
> this type of operation? SMB, NFS, or iSCSI?

ISCSI is not a file system, its purely a block device.   works best over 
fast low latency dedicated links.

I think NFS would be better for unix to unix than SMB.  SMB/CIFS is 
better for MS Windows, but neither works very well over high latency 
connections.