Storage Switzerland’s George Crump says there are more than enough protocols to choose between fibre and iSCSI. NAS (Network Attached Storage) has moved from just being a file sharing service to something that hosts databases and virtual machine images. NAS’s challenge is if there is a database or mail server in the organization that does not support having its data on a network mount point and if that application is not virtualized than you have to introduce a different protocol or use direct attached storage. For a single protocol to emerge or at least a dominant one, we are going to need to see something that meets the needs of the first time shared storage user and then scales.”]
Source: https://www.darkreading.com/database-security/storage-protocol-selection